Reaction trajectory
[化] 反应轨迹
🧩 词语组成解析
🗣️ 情景例句
I'm a student of the world; in other words I flunked out of high school.
我是社会学生，换句话说，我高中后就辍学了。
The classes are interesting, and the teachers are good.
那些课很有趣，老师又好。
This time it was the postman and he wanted me to sign for a registered letter!
这次是邮递员，他要我签收一封挂号信！