基本解释膀胱, 囊, 囊肿同根派生 cysta相关词英汉例句cysta branchialis 鳃裂囊肿cysta coronodentalis 牙冠囊肿cysta dentis residualis 牙残余囊肿cysta dermoidea 皮样囊肿cysta dermoidea submentalis 颏下皮样囊肿cysta更多例句