Trichromate
三铬酸盐
🗣️ 情景例句
I mean, Alexandra Pappas.
我是说Alexandra Pappas。
When is the most convenient time for us to meet?
我们什么时候见面最方便呢？
Excuse me. May I have a piece of paper, please?
请问，我可以要一张纸吗？