Dimetalation
二金属取代作用
🗣️ 情景例句
He's not as lucky as I am
他不像我这样幸运地
Sober up!
清醒点！
I don't have any small pads. I only have large one. Do you want a pad?
我没有小本的信纸，只有大本的。您要一本吗？