Reaction trajectory
[化] 反应轨迹
🧩 词语组成解析
🗣️ 情景例句
before Michelle and her friends arrived.
在Michelle和她的朋友们来之前。
Millions of thanks to you all, and don't forget to finish your dinner before it get cold.
十分感谢大家，大家快趁热吃吧。
Put them over there, please.
请把它们放到那边去。