Birds make their nests in trees. Small animals and insects build their homes in the hollows of trees.

鸟类在树上筑巢，小动物和昆虫则在树洞中栖居。

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Birds make their nests in trees. Small animals and insects build their homes in the hollows of trees.

鸟类在树上筑巢，小动物和昆虫则在树洞中栖居。

youdao