I had always assumed that the reason a squirrel had a big bushy tail was that as they careened through the space between branches they used it to wave around and keep from tumbling out of control.
我一直以为，松鼠有个毛茸茸的大尾巴，是因为它们摇晃着通过树枝间的空隙时，要摇摆它，以防失控跌倒。
Animal control officials in Staten Island say the bird was beaten so fiercely that most of its tail feathers fell out and it had to be euthanized.
斯塔岛区的动物控制中心的官员称，孔雀被殴打至尾部羽毛基本脱落，严重受伤，只能实行安乐死。
The test, research and operation practice prove that laying out rationally the wide tail trajectory is able to gain good dissipation and erosion control effect.
试验研究和工程运行实践表明：合理地布置宽尾墩，可由较简单的设施获得良好的消能防冲效果。
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