单词：invertebrate collagen
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What little we know of them comes almost entirely from eavesdropping on their songs, but even these are a mystery. 我们对它们的一点了解，儿乎完全出自我们偷听到的它们的叫声，而连那个也还是个谜。 Blue whales will
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This is Scientific Americans 60 second Science, I am Christopher Intagliata, got a minute? You've probably seen clouds of insects swirling round a streetlamp at night. But something you may not have noticed is that streetlights attract bugs to the gr
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extinction n. 消失，消灭 extinguish vt.消灭，熄灭 falcon n.[动](猎鸟用的)猎鹰 fall victim to 成为...的牺牲品 far-sighted founders 具有远见的奠基人 fig n. 无花果 firew
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