vi.穴居（den的过去式与过去分词形式）； 双语释义：n.(名词)[C]兽窝，兽穴 the home of a usually large fierce wild animal,such as a lion[C]密室，匪窝 a centre of secret,especially illegal activity英英释义： den[ den ]n.the habitation of wild animals同义词：laira hiding place; usually a remote place u