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n.腔，洞( cavity的名词复数 )；（龋齿的）洞； 双语释义：n.(名词)[C]腔,洞; 蛀牙 empty space within sth solid英英释义： cavityn.a sizeable hole (usually in the ground)同义词：pitspace that is surrounded by something同义词：enclosed spacesoft decayed area in a tooth; progressive decay can lead to t
