Cerap
陶瓷压电元件
🗣️ 情景例句
It is also not polite to ask people questions about politics.
另外，问一些关于政治和宗教的问题也是不礼貌的。
I asked him to buy it for me, but he wouldn't.
我请他帮我买，但是他不肯。
Why? What happened?
为什么？发生什么事了？