Ethynylation
炔化, 乙炔化作用
🗣️ 情景例句
I remember when I used to be a Girl Scout.
我记得我还是一名女童子军的时候。
I wasn't born yesterday.
我又不是三岁小孩。
We often call him by his nickname.
我们经常叫他的绰号。