Dioxopurine
黄嘌呤
🗣️ 情景例句
OK. You go out and get a drink of water at the fountain.
好。你出去在饮水机那儿喝点水吧。
I can't imagine why.
我想不通为什么。
The workmen struggled fiercely and one of them lost his temper.
两个工人奋力抗争，其中一个发了火，