美国国家公共电台 NPR A Slimy Discovery: New Fossil Found Of Jawless, Backless Hagfish

 

SCOTT SIMON, HOST:

You might want to set aside your cornflakes for a moment now. Ed Yong writes in The Atlantic about a substance he says, quote, "looks revolting but is also one of nature's more wondrous¹ substances, unlike anything else that's been concocted² by either evolution or engineers." Ed Yong, science writer for The Atlantic, joins us now. What are you celebrating here?

ED YONG: Hi. I am celebrating the slime produced by a type of fish called the hagfish. So the hagfish is, you know, a 2-foot long creature that lives in the deep ocean. It looks a bit like an eel³, but it's not. It has no backbone⁴. It has no jaws⁵. And, most tellingly, it has the ability to produce incredible amounts of this very, very weird⁶ and unusual slime.

SIMON: I guess we could both make a lot of jokes about how similar it is to members of the U.S. Senate, but (laughter)...

YONG: Can neither confirm nor deny that.

SIMON: Slime. A teaspoon⁷ of slime at first, but it really multiplies, doesn't it?

YONG: So a hagfish will release about less than a teaspoonful⁸ of the slime from the glands⁹ on its side. But in, like, less than half a second, that teaspoonful will expand into liters of slime. If you put a hagfish in a bucket, at first, it'll look like these thin wisps of, like, white, cloudy stuff have been released from its flanks. And then, if you stick your hand in and swirl¹⁰ it around, you'll just be pulling out, like, handfuls of this stuff. It's almost like the entire bucket will have converted into slime.

SIMON: But this is what they do to protect themselves?

YONG: Right, it's a defensive¹¹ measure. They release it when they're attacked or when they're stressed.

SIMON: Because a lot of predators¹² might say, ha-ha-ha, no backbone, no teeth? I know what I'm having for lunch.

YONG: Right, exactly. They often get bitten and attacked. But when they do, they instantly release this massive cloud of slime which is very, very good at infiltrating¹³ nooks and crannies, including the mouths and gills of predators. So there have been these incredible videos of sharks biting hagfish and then just recoiling¹⁴, their mouths and gills full of slime and just gagging and being forced to retreat.

SIMON: Sharks essentially¹⁵ saying, I'm sorry (laughter). I'm not a Spielberg shark. They don't pay me enough to swallow slime.

YONG: I think it's more like they're saying, (vocalizing).

SIMON: (Laughter) Now, hagfish slime is in the news because of a new fossil, right?

YONG: So partly, yes.

SIMON: A newly discovered fossil.

YONG: A newly discovered fossil. The fossil is interesting because the evolutionary¹⁶ relationships of hagfish to other fish have long been controversial. Like, a lot of scientists have thought of them as very primitive¹⁷ creatures, like some sort of transition from a kind of worm-like thing to a fish-like thing. But this new fossil helps us understand that it looks like hagfish are vertebrates. They are part of the backbone lineage. They just seem to have lost a lot of the traits that we have, things like complex eyes and bones and taste buds. So rather than being this weird, evolutionary throwback, they're actually very, very well-adapted animals to the somewhat grim and grotesque¹⁸ life that they live at the bottom of the ocean, feeding on corpses¹⁹, sliming things that might want to eat them.

SIMON: Oh, boy, does that sound - ah, what a life that sounds like.

YONG: (Laughter) Right. But I tell you what, I was serious when I said that it's one of evolution's marvels²⁰. I think very rarely do you see a substance with this combination of properties produced by an animal that most people have never heard of.

SIMON: Ed Yong covers science for The Atlantic. Thanks so much for being with us.

YONG: Thanks for having me.

1 wondrous   

adj.令人惊奇的，奇妙的；adv.惊人地；异乎寻常地；令人惊叹地

参考例句：

• The internal structure of the Department is wondrous to behold.看一下国务院的内部结构是很有意思的。
• We were driven across this wondrous vast land of lakes and forests.我们乘车穿越这片有着湖泊及森林的广袤而神奇的土地。

2 concocted   

v.将（尤指通常不相配合的）成分混合成某物( concoct的过去式和过去分词 )；调制；编造；捏造

参考例句：

• The soup was concocted from up to a dozen different kinds of fish. 这种汤是用多达十几种不同的鱼熬制而成的。
• Between them they concocted a letter. 他们共同策划写了一封信。 来自《简明英汉词典》

3 eel   

n.鳗鲡

参考例句：

• He used an eel spear to catch an eel.他用一只捕鳗叉捕鳗鱼。
• In Suzhou,there was a restaurant that specialized in eel noodles.苏州有一家饭馆，他们那里的招牌菜是鳗鱼面。

4 backbone   

n.脊骨，脊柱，骨干；刚毅，骨气

参考例句：

• The Chinese people have backbone.中国人民有骨气。
• The backbone is an articulate structure.脊椎骨是一种关节相连的结构。

5 jaws   

n.口部；嘴

参考例句：

• The antelope could not escape the crocodile's gaping jaws. 那只羚羊无法从鱷鱼张开的大口中逃脱。
• The scored jaws of a vise help it bite the work. 台钳上有刻痕的虎钳牙帮助它紧咬住工件。

6 weird   

adj.古怪的，离奇的；怪诞的，神秘而可怕的

参考例句：

• From his weird behaviour,he seems a bit of an oddity.从他不寻常的行为看来，他好像有点怪。
• His weird clothes really gas me.他的怪衣裳简直笑死人。

7 teaspoon   

n.茶匙

参考例句：

• Add one teaspoon of sugar.加一小茶匙糖。
• I need a teaspoon to stir my tea.我需要一把茶匙搅一搅茶。

8 teaspoonful   

n.一茶匙的量；一茶匙容量

参考例句：

• Add a teaspoonful of mixed herbs. 加入一茶匙混合药草。 来自《简明英汉词典》
• Add a teaspoonful of curry powder. 加一茶匙咖喱粉。 来自《简明英汉词典》

9 glands   

n.腺( gland的名词复数 )

参考例句：

• a snake's poison glands 蛇的毒腺
• the sebaceous glands in the skin 皮脂腺

10 swirl   

v.(使)打漩，(使)涡卷；n.漩涡，螺旋形

参考例句：

• The car raced roughly along in a swirl of pink dust.汽车在一股粉红色尘土的漩涡中颠簸着快速前进。
• You could lie up there,watching the flakes swirl past.你可以躺在那儿，看着雪花飘飘。

11 defensive   

adj.防御的；防卫的；防守的

参考例句：

• Their questions about the money put her on the defensive.他们问到钱的问题，使她警觉起来。
• The Government hastily organized defensive measures against the raids.政府急忙布置了防卫措施抵御空袭。

12 predators   

n.食肉动物( predator的名词复数 )；奴役他人者（尤指在财务或性关系方面）

参考例句：

• birds and their earthbound predators 鸟和地面上捕食它们的动物
• The eyes of predators are highly sensitive to the slightest movement. 捕食性动物的眼睛能感觉到最细小的动静。 来自《简明英汉词典》

13 infiltrating   

v.（使）渗透，（指思想）渗入人的心中( infiltrate的现在分词 )

参考例句：

• Be vigilant against the danger of enemy agents infiltrating the government and boring from within. 要警惕敌特渗入政府内部进行暗中破坏。 来自《现代汉英综合大词典》
• The metastatic melanoma is seen here to be infiltrating into the myocardium. 图示转移性黑色素瘤浸润到心肌。 来自互联网

14 recoiling   

v.畏缩( recoil的现在分词 )；退缩；报应；返回

参考例句：

• Some of the energy intended for the photon is drained off by the recoiling atom. 原来给予光子的能量有一部分为反冲原子所消耗。 来自辞典例句
• A second method watches for another effect of the recoiling nucleus: ionization. 探测器使用的第二种方法，是观察反冲原子核的另一种效应：游离。 来自互联网

15 essentially   

adv.本质上，实质上，基本上

参考例句：

• Really great men are essentially modest.真正的伟人大都很谦虚。
• She is an essentially selfish person.她本质上是个自私自利的人。

16 evolutionary   

adj.进化的；演化的，演变的；[生]进化论的

参考例句：

• Life has its own evolutionary process.生命有其自身的进化过程。
• These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。

17 primitive   

adj.原始的；简单的；n.原(始)人，原始事物

参考例句：

• It is a primitive instinct to flee a place of danger.逃离危险的地方是一种原始本能。
• His book describes the march of the civilization of a primitive society.他的著作描述了一个原始社会的开化过程。

18 grotesque   

adj.怪诞的，丑陋的；n.怪诞的图案，怪人（物）

参考例句：

• His face has a grotesque appearance.他的面部表情十分怪。
• Her account of the incident was a grotesque distortion of the truth.她对这件事的陈述是荒诞地歪曲了事实。

19 corpses   

n.死尸，尸体( corpse的名词复数 )

参考例句：

• The living soldiers put corpses together and burned them. 活着的战士把尸体放在一起烧了。 来自《简明英汉词典》
• Overhead, grayish-white clouds covered the sky, piling up heavily like decaying corpses. 天上罩满了灰白的薄云，同腐烂的尸体似的沉沉的盖在那里。 来自汉英文学 - 中国现代小说

20 marvels   

n.奇迹( marvel的名词复数 )；令人惊奇的事物（或事例）；不平凡的成果；成就v.惊奇，对…感到惊奇( marvel的第三人称单数 )

参考例句：

• The doctor's treatment has worked marvels : the patient has recovered completely. 该医生妙手回春，病人已完全康复。 来自辞典例句
• Nevertheless he revels in a catalogue of marvels. 可他还是兴致勃勃地罗列了一堆怪诞不经的事物。 来自辞典例句