The wing of a bat and the foreleg of a mouse are homologous .

蝙蝠的翅膀和鼠的前腿是同源的。

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The Bat assured him that he was not a mouse, but a bird.

蝙蝠改口说自己不是鼠，而是鸟。

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The Bat assured him that he was not a mouse, but a bird.

蝙蝠改口说自己不是鼠，而是鸟。

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