Ethynylation
炔化, 乙炔化作用
🗣️ 情景例句
If the lease period could be extended, then the terms will be acceptable.
如果租限能够延长，我们就能接受这些条件。
The cheque will be cleared in about three days.
大概在3天后，支票就可以兑现了。
Mrs.Ramsay got very worried.
拉姆齐太太急坏了，