啄木鸟在啄木头的时候，每秒头部向树撞击20次，你估计觉得这样它会需要一个坚如钢铁的脑袋来得以生存，但事实上，啄木鸟的脑袋是相对较软的，每只啄木鸟在出生时，鸟喙后长有一个软的海棉状的物质，用来吸收啄木头时所产生的震动。

Instead, the reality is that woodpecker heads are relatively soft. Each bird is born with a soft, sponge-like mass behind its beak that absorbs the shock created by pecking.

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海豚一种海豚科海洋鲸类哺乳动物，如的宽吻海豚，与鲸近似但一般比鲸小且有喙状吻。

Any of various Marine cetacean mammals, such as the bottle - nosed dolphin, of the family Delphinidae, related to the whales but generally smaller and having a beaklike snout.

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其中两个角是球茎状的眼睛，两个角是突出的面颊，第五个是他们的长喙。

Their bulbous eyes form two of the star's points, their pointed cheeks another two, and their bird-like beaks form the fifth and final point.

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其中两个角是球茎状的眼睛，两个角是突出的面颊，第五个是他们的长喙。

Their bulbous eyes form two of the star's points, their pointed cheeks another two, and their bird-like beaks form the fifth and final point.

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