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1·To nourish their great bulk, the whales have evolved several anatomical features that allow them to slurp in great volumes of prey-laden water when they feed.

为了填饱它们巨大的身躯，鲸在解剖学上进化出的几个显著特征使得它们能够在进食的时候吞入大量的含有各种食物的海水。