Incrustant
水垢
🗣️ 情景例句
do I really have to
我是不是真的有必要
To break the routine.
调剂一下。
But I'm worried about his Chinese.He may fall behind the other students when he comes back.
但我担心他的中文。等他回来后，他可能会落到其他同学后面。