Alaumstem
钠明矾
🗣️ 情景例句
Yes, I am.
是的，我是。
Yes, we have been interested in new system.
是的，我们对新系统很感兴趣。
Mr. Smith knew Jack didn't look at the others because he was nervous.
史密斯先生知道杰克不敢看别人是因为紧张。