Early forensics and crime-solving chemists - Deborah Blum

早期法醫學及破案化學家 - 黛博拉‧布魯姆 (Deborah Blum)

85,079 views

2013-04-01 ・ TED-Ed


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Early forensics and crime-solving chemists - Deborah Blum

早期法醫學及破案化學家 - 黛博拉‧布魯姆 (Deborah Blum)

85,079 views ・ 2013-04-01

TED-Ed


請雙擊下方英文字幕播放視頻。

00:00
Transcriber: Andrea McDonough Reviewer: Bedirhan Cinar
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譯者: Regina Chu 審譯者: Geoff Chen
00:14
So we live in what I think of as a CSI age
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所以我們活在我所認為的 CSI 時代
00:18
where we take for granted
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在這個時代我們想當然爾
00:20
that scientists are going to work together with the police,
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認為科學家會與警察合作
00:23
help them solve crimes,
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幫助他們破案
00:25
map fingerprints,
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採集指紋
00:26
analyze poisons,
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分析毒藥
00:27
but in fact, this is really a very new idea.
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但事實是,這是很新的概念
00:31
We only actually started training scientists and forensics
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我們真正訓練科學家及法醫專家
00:34
in this country in the 1930s.
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在這個國家也不過是在 1930 年代才開始
00:36
So as a writer interested in chemistry,
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所以身為對化學感興趣的作家
00:39
what I wondered was,
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我想知道的是
00:41
"What was it like before scientists knew
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「它是什麼樣子呢?在科學家知道
00:44
how to tease a poison out of a corpse,
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如何從一具屍體中測試毒藥前,
00:47
before you could actually catch a killer that way?"
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在你真的能以這種方法逮捕兇手前?」
00:49
And it won't surprise you to learn
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而你不會驚訝得知
00:51
that the answer is pretty dangerous.
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答案是還挺危險
00:53
And in fact, in 1918, New York City issued a report
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其實在 1918 年,紐約市出了份報告
00:58
admitting that smart poisoners could operate
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承認聰明的犯人可能
01:01
with impunity in the city.
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在這個城市逍遙法外
01:04
This is a 1918 crime scene photo from Brooklyn,
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這是一張1918 年 布魯克林犯罪現場的照片
01:08
and at this time, the coroner system was so corrupt
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在那段時間,驗屍官系統是如此腐敗
01:12
that you could literally buy your cause of death.
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你真的可以買通你自己的死因
01:15
Often coroners didn't even show up at crime scenes.
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常常驗屍官甚至不在犯罪現場出現
01:18
And if you go back and you look at the death certificates of the time,
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如果你回溯去看看 那時候的死亡證明書
01:22
I found one that read,
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我發現有一張是這麼寫的
01:23
"Could be an auto accident or possibly diabetes."
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「可能是車禍,也有可能是糖尿病。」
01:28
And another, which involved a man who shot himself in the head,
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而另一張,涉及一個男人 開槍射擊自己的頭部
01:33
said, "ruptured aneurysm".
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寫著:「動脈瘤破裂。」
01:35
So you find, not surprisingly, the police saying,
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所以你會發現這一點都不奇怪 警察會這麼說
01:39
"We're going to look a lot smarter
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「我們會看起來聰明很多,
01:40
if we stay away from the science side of the story."
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如果我們不看這個故事的科學面。」
01:45
But, in 1918 New York City appointed
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但在 1918 年紐約市指派了
01:48
the first trained medical examiner it ever had.
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有始以來第一位受過訓的法醫
01:51
That's the gentleman sitting down there.
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就是那位坐在那兒的紳士
01:53
And he hired the first forensic toxicologist ever
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而且他聘了史上 第一位法醫毒理學家
01:57
attached to an American city.
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附屬在一個美國市府下
01:59
And together, these two men,
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而這兩人合作
02:00
Charles Norris, the medical examiner,
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查爾斯·諾里斯,這位法醫
02:03
and Alexander Gettler, the chemist sitting next to him,
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及亞歷山大·蓋特勒 坐在他旁邊的這位化學家
02:05
rewrote the rules of crime detection in this country.
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重新改寫了這個國家犯罪偵查的規則
02:10
And that wasn't easy because poisons were everywhere.
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而那並不容易,因為毒藥無所不在
02:14
If we take this one, arsenic trioxide,
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如果我們拿這個為例 三氧化二砷(砒霜)
02:17
arsenic trioxide's probably the most famous homicidal poison in history
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三氧化二砷大概是 史上最有名的自殺毒藥
02:22
and it was in every home.
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而且每一個家庭都有
02:24
Anyone could go to the grocery store or the pharmacy and buy it.
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任何人都可以去雜貨店或藥房買它
02:28
It was in every kitchen because,
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每個廚房裡都有,因為
02:30
believe it or not, it was used to color food.
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信不信由你,它用於食物染色
02:33
It was in medicines
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它用於醫藥
02:34
and it was in cosmetics
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它也用於化妝品
02:37
in ways that prevented people from really understanding
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使用如此廣泛,阻礙了人們去真正瞭解
02:41
how dangerous these poisons were
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這些毒藥的危險性
02:43
or how they worked.
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或它們如何致毒
02:45
Now, scientists had in the 19th century
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那麼,科學家自 19 世紀起
02:48
begun developing tests to look for poisons in corpses.
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就開始研發測試法 以找出屍體內的毒藥
02:52
But as this cartoon shows you of the first test for arsenic,
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但就如這張第一次砷測試的漫畫所示
02:56
these were very primitive tests,
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這些是非常原始的測試法
02:59
so, that our heroes really have to figure this out
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所以,我們的英雄真的得把它搞清楚
03:03
as they go in the 1920s.
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在他們於 1920 年代開始工作時
03:06
Gettler, for instance, was the first person in the world
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舉個例,蓋特勒是世上第一位
03:09
to know how to tell if someone was drunk at time of death.
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知道如何分辨某人 在死亡時間是否酒醉
03:13
He figured that out right about 1930
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他大約就在 1930 把這件事弄清楚
03:16
and he said later it took him 6,000 brains from the morgue
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而他後來說這大概花了他 六千顆停屍間的腦袋
03:21
to get to the point that he could get to that answer.
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才讓他找到答案的重點所在
03:24
And to give you a sense of what this is like,
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而為了讓你對這有點概念
03:27
I'm going to ask you for a moment
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我要請大家暫時
03:29
to become 1920s forensic detectives.
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變成 1920 年代的法醫偵探
03:33
This is a case based on one solved by Alexander Gettler in 1923,
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這是根據一件在 1923 年 由蓋特勒所解決的案件
03:38
and as you can probably tell,
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而你大概可以猜到
03:41
it's a case that begins in a tenement building.
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這個案件從一棟移民公寓開始
03:44
This particular one was on the Lower East Side of Manhattan.
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這間公寓位於曼哈頓下東城
03:49
And these buildings were very crowded
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這些公寓都非常擁擠
03:51
with families who had very little money.
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住著沒有什麼錢的家庭
03:55
And the rooms were very poor.
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而且房子都很破舊
03:57
This is actually an abandoned room
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這實際上是一間廢棄屋
04:00
at the Tenement House Museum
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陳設在移民公寓博物館
04:01
that is in Lower Manhattan today.
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位於今天的曼哈頓下城
04:04
These rooms often had no electricity,
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這些房子通常沒有電
04:07
they had no hot water,
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沒有熱水
04:08
and people who lived this way
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而以這種方式過活的人
04:10
depended on gas to fuel everything
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依賴瓦斯為燃料
04:13
from their stove to their electric lights.
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從爐臺到電燈皆是
04:15
And this gas was called illuminating gas,
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而這種瓦斯稱作煤氣
04:18
and it was both a toxic and explosive mixture
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它是由毒性爆炸性兩者兼具的
04:21
of carbon monoxide and hydrogen.
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一氧化碳及氫氣的混合物
04:24
So you, the forensic scientist, are called
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所以你這位法醫科學家,被傳喚到
04:28
to a crime scene in a tenement house.
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位在移民公寓的犯罪現場
04:30
This is actually a police photo from the time in question,
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這實際上是一張時間未明的警察存證照片
04:34
but the story that I'm going to tell you
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但我要告訴你的這個故事
04:36
is a little more complicated than this.
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比時間考證還要稍微複雜一點
04:39
Nevertheless, you're going to go into this building,
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儘管如此,你要進到這棟建築物
04:43
you're going to walk down this hall,
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你要走過這個大廳
04:45
you're going to go through the door,
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你要穿過這扇門
04:48
and you're going to find yourself
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而你將發現你自己
04:49
in a very shabby apartment.
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位於一間非常簡陋的公寓
04:52
The floors are splintered,
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地板裂開了
04:53
the walls are peeling,
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牆壁剝落
04:55
there's only gas lighting,
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這裡只有瓦斯燈
04:57
and in this case,
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而在這個案件
04:59
you go into the back bedroom.
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你要進到後面的臥室
05:01
There's clearly been a gas leak,
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很明顯是有瓦斯漏氣
05:03
there's a broken fitting on the wall.
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牆上是有個壞掉的管線接頭
05:05
The police are opening the windows,
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警察正打開窗戶
05:07
and in the bed there's the body of young woman
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而在床上有一具年輕女人的屍體
05:10
who's clearly been dead for some time
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很明顯她已經死亡多時
05:12
because she's cold
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因為她的身體冷了
05:13
and she's stiff
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而且她很僵硬
05:14
and she's pale.
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而且她很死白
05:16
And you turn to the police and you say,
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你轉向警察,你說
05:20
"No, this is not an illuminating gas death
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「不對,這不是煤氣致死事件
05:25
because...."
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因為⋯」
05:27
Because if you're killed by carbon monoxide,
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因為如果你是因一氧化碳中毒而死
05:30
there is such a powerful chemical reaction in your blood
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你的血液會有一種非常強勁的化學反應
05:34
as the oxygen is muscled out of the blood stream
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就是氧氣會被擠出血液
05:37
that the blood cells are turned a bright, cherry red.
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血球細胞會轉變成鮮明的櫻桃紅色
05:42
And this red is so strong that it flushes the skin
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而這種紅色是如此強烈,它會使皮膚泛紅
05:46
of the corpse a cherry pink.
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讓屍體呈現櫻桃般粉色
05:48
In fact, people who see bodies
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事實上,看過屍體的人
05:51
after someone has died of a carbon monoxide death,
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在看過因一氧化碳而死的屍體後
05:53
they'll often talk about how healthy they look.
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他們常會說這些屍體看起來有多健康
05:55
So your poor, pale corpse could not have been killed by this gas.
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所以你那具可憐蒼白的屍體 不可能死於這種氣體
05:59
You take the body back to the morgue,
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你把屍體帶回停屍間
06:01
you run more blood tests,
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你又做了幾項測試
06:03
and you find another gas at extremely high levels,
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然後你發現另一種氣體的含量非常高
06:06
carbon dioxide.
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二氧化碳
06:08
And what does that tell you?
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那這告訴你了什麼?
06:11
If you think about the way we breath,
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如果你想想我們呼吸的方式
06:13
we inhale oxygen,
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我們吸進氧氣
06:15
we exhale carbon dioxide,
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我們呼出二氧化碳
06:16
but what if you can't exhale?
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但如果你不能呼氣會怎樣?
06:18
What if that gas can't get out?
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如果那種氣體不能釋出會怎樣?
06:20
It backs up into your lungs,
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它會累積在你的肺裡
06:23
and the number one clue of a suffocation or a strangulation
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而窒息或勒死的第一線索
06:27
is elevated levels of carbon dioxide in the blood.
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就是血液裡升高的二氧化碳量
06:30
And in fact, what they found
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事實上,他們發現
06:34
when they took a closer look at the body
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當他們仔細檢查那具屍體
06:36
were the bruise marks left by her husband's fingers
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有她的丈夫所留下的瘀青指痕
06:40
as he had held her down and suffocated her.
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在他把她壓住並勒死她的時後
06:43
And it turned out that he had
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原來他之前
06:46
taken out an insurance policy on her life,
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買了她的人壽保險
06:49
suffocated her,
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勒死她
06:51
broken the gas fitting to try to stage an accident scene,
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弄壞瓦斯管線,試著佈置成一起意外事件
06:56
and it turned out that it was chemistry
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結果是化學
06:58
that sent him to prison.
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把他送進了監牢
07:01
There are so many good poison and murder stories
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有太多很棒的毒殺及謀殺故事
07:04
from this time period that I would love to tell you.
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發生在這段時間,我真想說給你們聽
07:07
It's one of my favorite subjects obviously.
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很明顯這是我很喜歡的題目
07:10
But I want to leave you with this thought.
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但我想留給你這個想法
07:13
Two things.
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07:13
One is that case that I just described to you
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兩件事
第一是我剛剛才描述給你們聽的案件
07:17
is one of my favorites
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是我最喜歡的
07:18
because it's the beginning of a series of investigations
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因為這是一系列調查的開始
07:21
that persuade the New York police
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其說服了紐約警察
07:23
that they do need to work with scientists
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他們的確需要與科學家合作
07:25
and it lays the foundation for, in fact,
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而這其實也
07:28
our CSI-era age,
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為我們的 CSI 時代立下了基礎
07:30
and, because it's such a good story of two very determined people,
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而且,因為這是個有關 兩個非常堅決的人的好故事
07:36
in this case two city scientists,
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在這個例子是兩個市府科學家
07:38
who were able to change the world around them.
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能夠改變他們周圍的世界
07:41
Thank you.
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