Bounded occurrence
[计] 约束出现
🧩 词语组成解析
a. 有界限的
🗣️ 情景例句
I remember when I used to be a Girl Scout.
我记得我还是一名女童子军的时候。
When I had a rest, what were you doing?
当我休息时，你在做什么？
I have never seen the movie.
我从未看过那部电影。