Monosubstituted
[医] 一原子置换的, 单基置换的
🗣️ 情景例句
Could you please give me a receipt?
给我一张发票。
What? Already? Won't you have more coffee?
怎么，已经要走了？要不要再喝点咖啡？
Certainly. But please give it back soon.
可以，但是用完后请及时还回来。