Plasmosan
聚乙烯基吡咯烷酮
🗣️ 情景例句
Excuse me, May I have everyone's attention, please?
对不起，请大家听我说。
In elementary school,the child learns to read and write.
在小学，孩子学习读写。
Did he telephone again last night?
他昨夜里又打电话了吗？