Valvulotomy
n. [醫]瓣膜切開術
??? 情景例句
with the school board,
和聯合校董會一起，
Again.
又來了！
When I boarded the train, I could not help noticing that a great many local people got on as well.
上車后，我不禁注意到許多當地人也上了車。