Dentilave
[医]口腔冲洗
🗣️ 情景例句
please don't complain
你可别再抱怨
If you want knwledge, you must toil for it.
若要求知识，必须刻苦学习。
I repeated my question several times and at last he understood.
我把问话重复了很多遍。他终于听懂了。