Walruses frequently use ice floes to rest while they digest a meal, usually consisting of shellfish pried from the seafloor using their long tusks and strong lips.

海象在消化食物时，经常利用浮冰休息。它们食物一般由用象牙和有力的嘴唇从海底撬出的贝类食物组成。

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While that may be good for Wall Street in the short term, the long term negative effects of a downgrade could come back to haunt it and the rest of the U.S. economy.

虽然这在短期内对华尔街有好处，然而从长期来看，降级终究会为华尔街及美国经济带来负面影响。

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I have been thinking, as long as the butterfly flew to the opposite, has been flying forward, and the total flying time of tired, always stop and rest for a while.

我一直在想，只要蝴蝶不飞往对面，一直往前飞，总有飞累的时候，总要停下来休息片刻。

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"We had always expected a gap-filler with typically intermediate features such as a moderately elongate tail -- neither long nor short -- but the strange thing about Darwinopterus is that it has a head and neck just like that of advanced pterosaurs, while the rest of the skeleton, including a very long tail, is identical to that of primitive forms, " he said.

CNN: Pterodactyl fossil fills gaps in evolutionary tale