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(单词翻译:双击或拖选)
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.
M.I.T. scientists have designed a new robot. You’ll probably never see it though—it’s meant to be hidden. Because it’s a robot clam1. Engineers wanted to design a lightweight anchor that could be easily set and then picked up. That’s not possible with conventional anchors. A more talented anchor would be great for, say, small submarines that move around constantly to test ocean temperatures and currents.
Razor clams2 presented the ideal biological model. They can burrow3 a centimeter per second more than two feet down into the soil, where they can anchor themselves tightly to the ocean floor. Scientists set up a glass box with water and beads4 and stuck a living razor clam inside. They filmed what happened next. The animal’s foot wiggled into the beads. The rest of the clam followed by moving quickly up and down and rapidly opening and closing its shell. By carefully analyzing5 the film, the scientists discovered something surprising. The clam’s movements turn the sand around the creature into more of a fluid—basically quicksand. By copying this system, M.I.T. researchers created a tiny RoboClam. It’s the size of a cigarette lighter6. If they add artificial intelligence, we can find out if the device is happy as a clam.
Thanks for the minute for Scientific American's 60-Second Science. I'm Cynthia Graber.
1 clam | |
n.蛤,蛤肉 | |
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2 clams | |
n.蛤;蚌,蛤( clam的名词复数 )v.(在沙滩上)挖蛤( clam的第三人称单数 ) | |
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3 burrow | |
vt.挖掘(洞穴);钻进;vi.挖洞;翻寻;n.地洞 | |
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4 beads | |
n.(空心)小珠子( bead的名词复数 );水珠;珠子项链 | |
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5 analyzing | |
v.分析;分析( analyze的现在分词 );分解;解释;对…进行心理分析n.分析 | |
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6 lighter | |
n.打火机,点火器;驳船;v.用驳船运送;light的比较级 | |
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