Monomethylamine
[化] 一甲胺
🗣️ 情景例句
I'm extremely sorry for the delay.
对此延误，我深感抱歉。
Talk of an angel and you'll hear his wings.
说到曹操，曹操就到。
Once the existence of this wave-length had been discovered,
一旦这种波长的实际存在被发现，