- 空洞形成｛くうどう けいせい｝
- formation of cavity: 空洞形成｛くうどう けいせい｝
- cavity: cavity n. 穴; 〔解剖〕 腔(こう); 虫歯の穴.【動詞＋】dilate a cavity腔を広げるI have to go to the dentist to get a cavity filled.虫歯の穴をふさいでもらうために歯医者に行かなくてはならないFluorine treatment markedly reduces the tendency to form caviti
- in a cavity: 腔所中｛くうしょ ちゅう｝で
