Sruma
[医] 牙石
🗣️ 情景例句
Good afternoon. What's the trouble?
下午好。有什么不舒服吗？
I will have done it by the time you come back.
在你回来之前，我会做完它。[将来完成时，表示将完成…，会做完…]
He came to the point at once.
他一下子就说到了点子上。