The wacky history of cell theory - Lauren Royal-Woods

7,030,645 views ・ 2012-06-04

TED-Ed


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譯者: Ya Hui Hung 審譯者: Chingwen Kao
(音樂)
關於科學最偉大的一件事是
00:14
One of the great things about science
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00:16
is that when scientists make a discovery,
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當科學家有一項巨大的科學突破,
00:18
it's not always in a prescribed manner,
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這不一定是循規蹈矩的實驗成果,
例如,在實驗室按照處方做實驗,
00:21
as in, only in a laboratory under strict settings,
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00:24
with white lab coats
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穿著白色實驗服和使用會發出
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and all sorts of neat science gizmos that go, "Beep!"
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"嘟!"聲的專門儀器。
00:29
In reality,
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實際上,
這些科學家和他們偉大的科學發明
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the events and people involved
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00:32
in some of the major scientific discoveries
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00:34
are as weird and varied as they get.
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都有些奇趣和不尋常。
00:37
My case in point:
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我在這所要解說的是:
奇趣的細胞理論歷史。
00:39
The Weird History of the Cell Theory.
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細胞理論包含 3 個法則。
00:42
There are three parts to the cell theory.
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00:44
One: all organisms are composed of one or more cells.
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第一: 所有生物都是由細胞組成的。
00:48
Two: the cell is the basic unit of structure
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第二: 細胞是所有生物最基本的單位。
00:51
and organization in organisms.
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00:53
And three: all cells come from preexisting cells.
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第三: 所有細胞繁衍於已存在的細胞。
00:57
To be honest, this all sounds incredibly boring
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說真的,這樣聽起來是不是超無趣?
01:01
until you dig a little deeper
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所以讓我們從微生物的世界
01:03
into how the world of microscopic organisms,
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01:06
and this theory came to be.
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和這理論的來歷說起。
據說在 17 世紀,
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It all started in the early 1600s in the Netherlands,
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荷蘭有一個叫做
01:11
where a spectacle maker named Zacharias Janssen
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楊森 (Zacharia Jansen) 的眼鏡製造商, 他發明了顯微鏡
01:13
is said to have come up with the first compound microscope,
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和歷史上第一個望遠鏡。
01:17
along with the first telescope.
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但這兩樣儀器的發明者還有待確認,
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Both claims are often disputed,
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01:20
as apparently he wasn't the only bored guy
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因為很顯然的, 楊森不是那時唯一喜歡玩鏡片的傢伙。
01:23
with a ton of glass lenses to play with at the time.
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儘管這樣,
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Despite this,
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01:27
the microscope soon became a hot item
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顯微鏡很快就成為了一個熱門貨
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that every naturalist or scientist at the time wanted to play with,
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那時的每個博物學家或科學家都想擁有一個,
01:33
making it much like the iPad of its day.
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其受歡迎的程度跟現代的 iPad 有得比。
有另一位叫做
01:36
One such person
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01:37
was a fellow Dutchman by the name of Anton van Leeuwenhoek,
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列文虎克 (Anton van Leeuwenhoek) ,
01:41
who heard about these microscope doohickeys,
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對顯微鏡這玩意兒興趣很高,
01:43
and instead of going out and buying one,
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但他不想去買一個,
01:45
he decided to make his own.
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所以他決定自己做一個來玩玩。
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And it was a strange little contraption indeed,
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這的確是一個奇異的小玩意兒,
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as it looked more like a tiny paddle the size of a sunglass lens.
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因為它看上去像是太陽鏡片大小的小槳。
01:54
If he had stuck two together,
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如果他將兩個粘在一起, 它有可能是一副絕妙的太陽眼鏡......
01:56
it probably would have made a wicked set of sunglasses
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01:58
that you couldn't see much out of.
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完全能防止陽光侵透。
02:01
Anyhoo, once Leeuwenhoek had his microscope ready,
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話說回來,當列文虎克完成了他的顯微鏡
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he went to town,
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他到了城裡,什麼都用他的新顯微鏡拿來研究一番,
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looking at anything and everything he could with them,
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02:08
including the gunk on his teeth.
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包括他牙齒上的汙垢。
02:10
Yes, you heard right.
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對,你沒聽錯。
他就是如此而發現了細菌,
02:13
He actually discovered bacteria
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02:15
by looking at dental scrapings,
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02:17
which, when you keep in mind
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當然,你要知道當時的人不常刷牙,
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that people didn't brush their teeth much -- if at all -- back then,
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或者可以說是完全不刷牙的,
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he must have had a lovely bunch of bacteria to look at.
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所以他有滿嘴的細菌來研究。
02:27
When he wrote about his discovery,
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當他報告這發現時,
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he didn't call them bacteria, as we know them today.
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他並不稱呼這些"汙垢"為"細菌"。
他叫它們"動物分子",
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But he called them "animalcules,"
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02:34
because they looked like little animals to him.
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因為它們看起來像小動物。
02:36
While Leeuwenhoek was staring at his teeth gunk,
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列文虎克在研究他牙齒的汙垢的同時,
02:39
he was also sending letters to a scientific colleague in England,
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他寫了一封信給一位在英國
02:42
by the name of Robert Hooke.
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叫虎克 (Robert Hooke) 的科學同好。
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Hooke was a guy who really loved all aspects of science,
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虎克的科學研究興趣很廣泛,
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so he dabbled in a little bit of everything, including physics,
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其中包括了物理,化學和生物。
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chemistry and biology.
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02:53
Thus it is Hooke who we can thank for the term "the cell,"
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所以"細胞" (cell) 這名稱就是拜虎克所賜。
02:57
as he was looking at a piece of cork under his microscope,
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這名稱來自他用顯微鏡觀察到的軟木片結構,
03:00
and the little chambers he saw reminded him of cells,
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他覺得這些植物細胞結構有如教士們住的單人房,
03:04
or the rooms monks slept in in their monasteries.
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英文名稱為 "cell"。
教士的單人房有如沒有電視、電腦, 和吵鬧室友的大學宿舍。
03:09
Think college dorm rooms,
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03:10
but without the TVs, computers and really annoying roommates.
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03:14
Hooke was something of an underappreciated scientist
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那時的虎克並不是一位被賞識的科學家。
03:17
of his day --
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這要歸咎於
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something he brought upon himself,
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他跟史上最有名的科學家之一,
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as he made the mistake of locking horns
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with one of the most famous scientists ever, Sir Isaac Newton.
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牛頓 (Sir Isaac Newton) 的論爭。
還記得我說過虎克的科學興趣很廣泛嗎?
03:25
Remember when I said Hooke dabbled in many different fields?
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03:27
Well, after Newton published a groundbreaking book
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當時牛頓出版了一本劃時代的論著,
03:30
on how planets move due to gravity,
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講述包括萬有引力的 「論宇宙的系統」,
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Hooke made the claim
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虎克聲稱牛頓的理論是
03:33
that Newton had been inspired by Hooke's work in physics.
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受到他物理研究成果的啟發。
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Newton, to say the least, did not like that,
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當然了,牛頓非常的憤怒,
即便在虎克死後,兩人的關係仍舊緊張,
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which sparked a tense relationship between the two
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that lasted even after Hooke died,
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03:45
as quite a bit of Hooke's research -- as well as his only portrait --
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且不只是針對虎克的研究成果,
因為牛頓的關係, 皇家學會拆除了虎克僅存的肖像。
03:50
was ... misplaced, due to Newton.
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Much of it was rediscovered, thankfully, after Newton's time,
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還好,在牛頓去世後,虎克的理論又重被世人重視,
但他的肖像卻永遠消失, 使得後人無法得知虎克的樣貌。
03:56
but not his portrait,
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as, sadly, no one knows what Robert Hooke looked like.
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04:00
Fast-forward to the 1800s,
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我們現在跳到 19 世紀,
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where two German scientists discovered something
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有兩位德國科學家, 他們的發現用現代眼光來看
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that today we might find rather obvious,
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04:07
but helped tie together what we now know as the cell theory.
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可能非常理所當然, 但對當代細胞理論有著極大貢獻。
第一位是施萊登 (Matthias Schleiden),
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The first scientist was Matthias Schleiden,
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04:13
a botanist who liked to study plants under a microscope.
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他是喜歡用顯微鏡研究植物結構的植物學家。
從他多年觀察各種植物的結構,
04:17
From his years of studying different plant species,
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04:19
it finally dawned on him
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他發現所有植物都是
04:21
that every single plant he had looked at
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were all made of cells.
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由細胞構成的。
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At the same time,
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同時,在德國的另一端,
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on the other end of Germany was Theodor Schwann,
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有一位叫施旺 (Theodor Schwann) 的科學家,
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a scientist who not only studied slides of animal cells
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他專門用顯微鏡研究動物細胞,
04:33
under the microscope
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施旺細胞就是以他名字命名的 一種特殊類型的神經細胞,
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and got a special type of nerve cell named after him,
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不只如此,他也發明了給消防隊員用的呼吸器
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but also invented rebreathers for firefighters,
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04:40
and had a kickin' pair of sideburns.
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並留有引人注目的兩鬢鬍鬚。
他多年觀察動物細胞的心得是
04:43
After studying animal cells for a while,
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he, too, came to the conclusion
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每種動物都是由細胞構成的。
04:47
that all animals were made of cells.
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04:49
Immediately, he reached out via snail mail,
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因為當時推特 (Twitter) 還有待發明,
所以他當下馬上將這概念用郵寄 (蝸牛信)的方式
04:52
as Twitter had yet to be invented,
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to other scientists working in the same field with Schleiden,
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跟其他的科學同好分享,
包括施萊登。 於是他們開始合作產生細胞理論的原型。
04:57
who got back to him,
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04:58
and the two started working on the beginnings of the cell theory.
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05:01
A bone of contention arose between them.
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但細胞理論的第三法則,
05:03
As for the last part of the cell theory --
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成為了他們爭論的焦點。
所有細胞是否繁衍於已存在的細胞?
05:06
that cells come from preexisting cells --
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05:08
Schleiden didn't exactly subscribe to that thought,
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施萊登不完全支持這概念,
05:11
as he swore cells came from free-cell formation,
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他主張細胞是自發形成的,
05:14
where they just kind of spontaneously crystallized into existence.
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類似自發結晶而產生的。
當下,另一位名叫菲爾紹 (Rudolph Virchow) 的科學家,
05:19
That's when another scientist named Rudolph Virchow,
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05:21
stepped in with research showing that cells did come from other cells,
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提出了研究證明 ─ 所有細胞繁衍於已存在的細胞,
05:25
research that was actually -- hmm ... How to put it? --
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但這研究成果 ─ 哎呀,要怎麼說呢? ─ 是抄襲於
05:28
"borrowed without permission"
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一位名叫雷馬克 (Robert Remak) 的猶太裔科學家,
05:30
from a Jewish scientist by the name of Robert Remak,
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因此這又造就了兩位不合的科學家。
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which led to two more feuding scientists.
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所以從牙齒的汙垢到惱怒的牛頓,
05:36
Thus, from teeth gunk to torquing off Newton,
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從結晶到施旺細胞,
05:39
crystallization to Schwann cells,
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05:41
the cell theory came to be an important part of biology today.
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演變而來的細胞理論是現代生物學一門重要的學問。
有些現代科學理論可能讀起來很無趣,
05:45
Some things we know about science today may seem boring,
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但是他們的發展可以說是耐人尋味。
05:49
but how we came to know them is incredibly fascinating.
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所以任何無趣的事,
05:53
So if something bores you,
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05:55
dig deeper.
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如果你仔細探索,
05:56
It's probably got a really weird story behind it somewhere.
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你有可能偶然發現他們背後一些耐人尋味的奇趣。
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