Ethynylation
炔化, 乙炔化作用
🗣️ 情景例句
It's no secret my wife is expecting a baby.
我老婆快生孩子了，这又不是什么秘密。
Don't worry! It's nothing.
不要紧，没什么事。
The doctor says that he will come at once.
医生说他马上就来。安迪，