Ethiopsite
硫化汞
🗣️ 情景例句
I've been studying all day, and I'm sick and tired of it.
我学了一天，现在感到厌倦。
Goodbye. Thanks again for everything.
再见了，再次感谢你所做的一切。
We can't sign the contract yet.
我们还不能在契约上签字。