Polycyclization
聚环作用
🗣️ 情景例句
I remember now. Right. Hi.
我现在想起来了。对了。嗨。
We kept on discussing the problem for four hours.
我们持续讨论那个问题达四小时。
At present, they are visiting all parts of the country.
目前他们正在全国各地巡回演出，