Dimethylation
二甲基化作用, 二甲基取代作用
🗣️ 情景例句
I'll chop the onions.
我要去切洋葱。
What is the way to the theater?
哪一个方向是去戏院的？
The young man did not wake up until the bed had struck the ground.
那年轻人直到床撞到地上才醒了过来。