Gub
abbr. generalized upper boundary 模糊上限
✅ 同义词
🗣️ 情景例句
That can't be!
不可能！
Who are those people?
那些人是谁？
I've got some personal affairs that I have to see to, but I've also got some time to visit some relatives.
我还有些个人的事得去料理一下，但我也得抽些时间去看看一些亲戚。