Dihydrofluoride
[化] 二氢氟化物
🗣️ 情景例句
I don't envy him his money problems.
我庆幸自己没有他那些金钱的烦恼。
Your appointment will be next Thursday at 10 o'clock.
你的约会时间将是下一星期四的10点钟。
Could you explain exactly what you do?
您能确切的解释一下你做些什么吗？