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n.腔,洞;蛀牙,龋洞; 变形: 复数:cavities 双语释义:n.(名词)[C]腔,洞; 蛀牙 empty space within sth solid英英释义: cavity[ 'kævəti ]n.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 ca