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.
他无奈的东看西看，突然发现树原来各式各校，叶子新鲜还有鸟在叫，真是鸟语花香。
He helpless east watching west look, suddenly found that trees originally various schools, leaf fresh and the birds are singing, really roses.
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