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(单词翻译)
This is Scientific Americans' 60-Second Science. I am Karen Hopkin, this will just take a minute.
Most school kids know that snakes can see with their noses, Vipers1 in particular have these organs on their noggins that allow them to see heat which helps them find their warm blooded prey2. If that's not wild enough for you, now physicists3 from Germany and Kansas say that snakes can hear with their jaws5. An idea they present in an upcoming issue of Physical Review Letters. See, snakes don't have actual ears, at least not on the outside, but they do have fully-formed inner-ear systems, complete with a cochlea, the fluid filled bone that harvests sound. But in snakes, the cochlea is connected to the jaw4 bone. So if you walk past a snake that's resting with its head on the ground, the vibrations6 from your footsteps jiggle the snake's jaw which shakes the snake's cochlea, so the snake can hear you move. In fact, the physicists found that this whole listening with your mouth setup can sense even the tiny vibrations made by scampering7 rodents8 or other small prey. And because snakes can unhinge their jaws one side at a time, they may be able to hear in stereo, which means that tapping on the glass of the rattlesnake exhibit is actually twice annoying as anyone ever realized.
Thanks for the minute, for Scientific Americans' 60-Second Science. I am Karen Hopkin.
1 vipers | |
n.蝰蛇( viper的名词复数 );毒蛇;阴险恶毒的人;奸诈者 | |
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2 prey | |
n.被掠食者,牺牲者,掠食;v.捕食,掠夺,折磨 | |
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3 physicists | |
物理学家( physicist的名词复数 ) | |
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4 jaw | |
n.颚,颌,说教,流言蜚语;v.喋喋不休,教训 | |
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5 jaws | |
n.口部;嘴 | |
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6 vibrations | |
n.摆动( vibration的名词复数 );震动;感受;(偏离平衡位置的)一次性往复振动 | |
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7 scampering | |
v.蹦蹦跳跳地跑,惊惶奔跑( scamper的现在分词 ) | |
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8 rodents | |
n.啮齿目动物( rodent的名词复数 ) | |
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