Mitralization
二尖瓣型心
🗣️ 情景例句
Richard, did you go to the Davis Aerobics class today? Richard
你去上Davis有氧运动健身课了吗？
Are you going to use cash or traveller's cheques?
您是用现钞换呢，还是用旅行支票换？
If you think it is necessary.
如果你认为有这必要的话。