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urchins

美 [??rt??n]英 [???(r)t??n]
  • n.顽童；【动】海胆；儿童；少年

复数：urchins

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英-汉英-英网络释义

urchins

海胆

Marc的提示：我经常在其他资料中发现海胆（Urchins）是食藻类的高手。然而这个海胆（ Arbacia punctulata ）显然更喜欢钙 …

例句：
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And when the fish were all gone, all anyone ever saw underwater was just acres and acres of sea urchins.
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Marine invertebrates, sea urchins use their spines to move along the seafloor, and crabs are known to be their natural predators.
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These street urchins soon formed into gangs and by the end of the 19th Century Hell's Kitchen became the crime capital of the U. S.
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He defected, he wrote, by offering to source sea urchins from Japan, from where he never returned.
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No corals, no sea urchins and no who-knows-what-else would be bad news indeed for the sea.
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If you dressed one of those urchins in nice clothes and taught him good manners, there wouldn't be a whit of difference!
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for these spines perform the office of hair, and not of feet as is the case with similar parts of sea-urchins.
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On the sea bed at depths of up to 3, 000ft are vast coral reefs, forests of willowy feather-stars and russet-red sea urchins.
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The spiky body of a sea urchin acts as one big, spine-covered eye, confirms a new study that tested how well urchins can see.
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All the sea urchins seemed oblivious to the smaller disks, Johnsen's team found.
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A nontoxic dye highlights water currents surrounding sea urchins off Vancouver Island, British Columbia.
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Remains of more modern corals, diverse pelecypods, sea urchins and ammonoids characterize the marine strata of the Mesozoic ERA.
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Green sea urchins, chitons, and sea stars cluster in a tidal pool off Alaska's Aleutian Islands.
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Bottom-dwelling creatures like mussels, brittle stars and sea urchins have not developed any defenses.
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Too many sea urchins can virtually clear- cut the underwater kelp forest where fish live and hide .
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Without sea otters keeping sea urchins in check, their population has exploded.
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Now scientists are solving the mystery of how urchins keep their teeth so keen, and the research could lead to self-sharpening tools.

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