Dipyrrole
α, α'-联吡咯
🗣️ 情景例句
Hey, that must be Pete!
嗨， 那一定是Pete
We kept on discussing the problem for four hours.
我们持续讨论那个问题达四小时。
Then, when it's open, we fight about who plays with it first.
然后，当礼物打开后，我们又争着谁先来玩。