Valva
[医] 瓣, 瓣膜
🗣️ 情景例句
I do some work for Smith and Dale,Your company's accounting firm.
我为贵公司的会计顾问公司 Smith和Dale事务所里做一些工作。
If I had known that, I could have helped you.
假如我早知道，我就能帮你了。
Ouch!
哎哟！