名词
中文翻译：兽穴
同义词：
['beast den', 'den of beasts']
例句：
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1. The lion was sleeping in its den when the hunter approached.
当猎人接近时，狮子正在它的巢穴中睡觉。
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2. The hunter had to move the den of the bear to avoid it.
猎人不得不移动熊的巢穴以避免它。
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3. The hunter found the den of the wolf and killed it.
猎人发现了狼的巢穴并杀死了它。