Propargyl
炔丙基
🗣️ 情景例句
All right.
行了。
Goodbye, it was nice meeting you.
再见，很荣幸认识你。
The underground railway runs 24 hours a day, and there are all-night cinemas, bars and restaurants.
地铁一天24小时不停地运营。还有通宵电影院、酒吧间和餐馆。