Pericondensed polycyiclic
[建] 包缩合多环物的
🗣️ 情景例句
Not a bad slogan.
不错的标语。
Would you please leave the door unlocked for me?
可以请你为我把门锁打开吗？
Fine.let's get together again next week.
好吧，那就下周再聚会了。