Opsopyrrole
[化] 3-甲基-4-乙基吡咯
🗣️ 情景例句
and this is an important decision we have to make.
这又是我们必须做的一个重大决定。
I asked him to paint it for me, but he wouldn't
我请他帮我油漆，但是他不肯。
Jack was an excellent tennis player. He was able to beat anybody.
竭克是个网球健将。他天下无敌。