Pvp
[医] 聚乙烯吡咯烷酮
🗣️ 情景例句
Let me know by the end of the week.
这个周末前给我回音。
The surest way to be happy is to be busy.
要快乐，最可靠的办法是忙碌。
Sorry, I haven't. Why don't you ask Jim.
对不起，我没见。你为什么不去问问吉姆呢？