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有一天,几位动物学专家在一起探讨动物飞翔的原理。几个小时之后,他们得出一致结论:凡是会飞的动物,他们的形体构造都是身躯轻巧双翼修长的。
One day, several zoological experts are discussing the principle of animal flying. A few hours later, they reached the unanimous conclusion: All animals flying, their body structure are slim and slim wings.