Ethynylation
炔化, 乙炔化作用
🗣️ 情景例句
In any case, you should prepare for the worst.
无论如何你要做好最坏的打算。
Did you hurt yourself?
你自己割伤的？
Why not take a friend with you?
为什么不邀上个朋友和你一起去呢？