The truth about bats - Amy Wray

1,822,045 views ・ 2014-12-16

TED-Ed


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翻译人员: Yolanda Zhang 校对人员: Shawnee Huang
00:10
Flying through the night, I watch over this world,
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在黑夜中飞翔,我俯视脚下的世界,
00:13
a silent guardian, a watchful protector, a dark knight, I'm...
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仿佛一个沉默的守护者,一个警惕的保护者, 一个黑夜骑士,我就是....
00:22
Okay, fine. So, I'm not Batman. I'm just a bat.
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好吧,我不是蝙蝠侠,我就是只蝙蝠。
00:25
But like Batman, I'm often misunderstood.
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但是像蝙蝠侠一样,我常常被误解。
00:28
People think I'm scary, strange and dangerous.
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人们认为我可怕,怪异甚至危险。
00:31
If they only knew my story, though, I'd be cheered as a hero.
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但是如果他们知道我的故事的话, 他们会觉得我是个英雄的。
00:36
When people think of bats,
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当人们想到蝙蝠,
00:38
many think of vampires who want to suck their blood.
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会联想到渴望吸他们血的吸血鬼。
00:41
But the truth is that out of over 1200 bat species,
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但是实际上,在1200多种蝙蝠中,
00:44
only three are vampire bats.
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只有3种蝙蝠靠吸血维生。
00:47
Out of these three, only one prefers the blood of mammals,
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而这3种吸血蝙蝠 也更偏好哺乳动物的血,
00:50
and even these bats mostly feed on cattle.
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甚至大都也仅仅靠牛等牲口的鲜血维生。
00:54
Maybe that still doesn't seem so great,
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可能他们看起来还是不太友好,
00:56
but vampire bats can be a great help to humans.
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但是吸血蝙蝠可以在很大程度上帮助人类。
01:00
A chemical known as desmoteplase found in vampire bat saliva
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我们在吸血蝙蝠的唾液里 找到的一种化学物质,去氨普酶,
01:04
helps break down blood clots,
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能够促进凝血的疏通。
01:06
and is being tested by recovering stroke victims.
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康复的中风病人已经证明了这确实有效。
01:10
Of the remaining 1000+ species of bats, about 70% feed on insects.
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其余剩下的1000多种蝙蝠中, 70%都以捕食昆虫为生。
01:16
These bats help control the real vampires:
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这些蝙蝠帮忙遏制了真正的吸血鬼,
例如在你身上留下烦人的叮伤,
01:19
mosquitos, whose nasty bites are not just annoying
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01:22
but spread diseases, like West Nile virus.
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同时又传播了西尼罗河病菌的蚊子。
01:25
A single little brown bat can eat 1000 insects every hour,
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一只棕色小蝙蝠每小时能吃1000多只昆虫,
01:29
and a colony of Mexican free-tailed bats can eat several tons of moths
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而一群墨西哥无尾蝙蝠一晚上就可以
01:34
in just one night.
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吃掉几吨的蛾子。
01:36
In the United States alone,
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仅在美国,
01:37
bats provide an estimated 3.7 billion dollars worth
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蝙蝠就为农民们省下了
01:41
of free pest control for farmers,
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将近37亿美元的除虫预算。
这让每个食用农作物的人都受益。
01:44
which benefits everyone who eats the foods that they grow.
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01:47
Fruit bats, also called megabats because of their large size,
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果蝠, 因其体型之大又被称为狐蝠,
01:51
are important for the role they play in plant pollination.
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对植物授粉过程有着很大的贡献。
01:54
By traveling between flowers while feeding on nectar and fruits,
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在穿梭于花丛中吃蜜和果实的同时,
01:58
these bats transport the pollen and seeds that help plants reproduce.
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这些蝙蝠传播的花粉和种子 能够帮助植物繁殖。
02:02
In Southeast Asia, for example,
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比如在东南亚,
02:04
the cave nectar bat is the only pollinator of the durian fruit.
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长舌果蝠是榴莲树唯一的授粉者。
02:09
Other bats pollinate peaches, bananas,
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其他蝙蝠也为桃子,香蕉等植物授粉,
02:11
and the agave plants that tequila is made from.
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用来酿造龙舌兰酒的龙舌兰属植物 也依靠蝙蝠的帮助。
如果没有它们,
02:15
Without them,
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02:15
many of our food plants would be unable to produce the tasty fruits we enjoy.
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很多植物就不能生长出美味的果实。
02:20
As heroes of the ecosystem, bats have their own unique utility belts.
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蝙蝠用它们自己的方式守护着自然界。
02:25
Bats have been a source of inspiration for the design of flying robots
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蝙蝠不仅是设计飞行机器人的模本,
02:29
and even an energy-efficient spy plane,
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也启发了人们设计出了节能间谍机。
02:32
as they are the only mammal capable of true powered flight.
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因为它们是唯一真正利用动力来 推动飞翔的哺乳动物。
回声定位法,一种声纳系统, 也被蝙蝠用来导航
02:39
Echolocation, a type of biological sonar, is also used by bats as a way to navigate
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02:44
and find prey in the dark.
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和在黑暗中寻找猎物。
02:46
Although there's a common misconception that bats are blind,
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虽然蝙蝠常被误解为瞎子,
02:49
in truth, all species of bats have sight.
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但是实际上,蝙蝠都有视力。
02:52
And some have even adapted large eyes to see better in dim lighting.
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有些蝙蝠甚至长着很大的眼睛, 用于捕捉夜晚暗淡的光线。
02:57
Many people worry about getting infected by bats,
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很多人担心被蝙蝠传染疾病,
03:00
and like any other animals, bats can carry diseases, like rabies.
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认为它们像其他动物一样 也携带很多病毒,例如狂犬病。
03:04
In reality, though, less than .5% of all bats carry this virus.
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实际上,只有小于0.5%的 蝙蝠携带这种病毒。
03:09
That's about the same odds as getting the same result on a coin flip
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这几乎与抛8次硬币 都得到相同结果的
03:13
eight times in a row.
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概率一样小。
蝙蝠传染疾病的这种想法
03:19
The perception that bats are often diseased
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03:21
may come from the fact that sick bats,
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也许来源于患病的蝙蝠,
03:23
who may show unusual behavior, emerge during the daytime,
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病蝙蝠一般行动异常,多在白天活动,
03:26
or be unable to fly,
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或不能飞行,
03:28
are more likely to be encountered by people.
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通常更容易被人们发现。
03:31
So a good way to protect yourself is to protect bats as well,
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所以保护自己最好的方式是保护蝙蝠。
03:34
keeping them healthy, protecting their habitats,
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让它们健康,保护它们的家,
03:37
and reducing their risk of transmitting disease.
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并降低它们传播疾病的危险性。
03:40
In North America, bats are threatened by a devastating sickness
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在北美,蝙蝠的生命被一种致命的疾病,
03:44
called white-nose syndrome.
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白鼻症所威胁。
03:46
This fungal infection causes bats to wake up
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这种真菌感染会让蝙蝠
03:49
while hibernating during a winter.
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在冬眠的时候醒来。
03:51
Unable to find food, they expend large amounts of energy,
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由于无法找到食物, 它们会消耗大量的能量,
03:54
and eventually starve to death.
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最终饿死。
白鼻症曾经导致了 一整个山洞的蝙蝠死亡,
03:57
White-nose syndrome has wiped out entire caves full of bats,
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04:00
with a mortality rate that can exceed 90%.
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并且致命率高达90%以上。
04:04
Climate change and habitat destruction
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气候的变化和家园遭受破坏
04:05
also pose serious threats to bat populations.
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也同样威胁着蝙蝠的数量。
04:08
For example, in January 2014, a record heat wave in Australia
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例如,在2014年1月, 热流袭击了澳大利亚,
04:13
caused over 100,000 bats to die from heat exhaustion.
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超过十万只蝙蝠 都死于中暑导致的衰竭。
有些人就想看着世界被热浪席卷,
04:18
Some people just want to watch the world burn,
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04:20
and bats all over the world are threatened by damage to the places that we call home,
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而世界各地蝙蝠的生命会因 家园的破坏而受到威胁,
包括红树沼泽,
04:25
including mangrove swamps,
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04:26
old-growth forests,
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原始森林,
04:28
and, of course, bat caves.
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当然,还有蝙蝠山洞。
04:31
So even though I'm the hero of the story, I do need to be saved.
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所以即使我是故事中的英雄, 我也需要被拯救。
04:35
And now that you know the true story about us bats,
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所以现在你知道我们蝙蝠真正的故事,
希望你能学会如何保护我们。
04:38
you can learn how to protect such heroic animals.
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04:40
Install a properly designed bat box,
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可以设计一个巧妙的蝙蝠盒子,
04:44
one of the easiest ways to provide shelter for bats.
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一个最简单的蝙蝠避难所。
04:47
Discourage the use of pesticides, which can harm bats
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当试图将蝙蝠赖以为生的昆虫杀死时,
04:50
when we try to feed on the insects you want to get rid of in the first place.
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减少杀虫剂的使用也能保护蝙蝠。
04:54
Avoid going into caves where you might disturb hibernating bats,
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避免进入有蝙蝠生存的山洞,
04:57
and always decontaminate your gear after visiting a cave.
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并且尽量不破坏你所参观的山洞。
如果我们成为了你仓库里的不速之客,
05:02
If you have unwanted bats living in an attic or barn,
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05:04
contact your local government to safely and humanely relocate us.
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请联系地方政府并安全地迁移我们。
05:09
And if you come across a bat, do not attempt to handle it,
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当你发现一只蝙蝠时,不要尝试去打扰它,
05:12
but instead, call Animal Control.
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请叫动物保护协会的人来处理。
05:16
Batman might want to keep his identity secret,
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蝙蝠侠也许可以将他的身份隐藏起来,
05:19
but a great way to help real bats is by continuing to learn about them
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但是真正让蝙蝠安全的 一个方式是去认识它们,
05:23
and spreading the truth that they are real heroes,
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并且让人们知道它们是真正的英雄,
05:27
even if their good deeds are often unseen.
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即使它们正义的本质常常被隐藏起来。

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