Menaphthone
[医] 甲萘醌, 2-甲基-1,4-萘醌, 维生素K-3
🗣️ 情景例句
It's no use crying over spilt milk. What's done cannot be undone.
覆水难收。
I'm too tired.
我太累。
What do you do as a director?
作为导演您具体干什么呢？