Gub
abbr. generalized upper boundary 模糊上限
✅ 同义词
🗣️ 情景例句
and they found it to be too easy--
他们发现字太简单了，
No matter what comes up, don't sound nervous.
不论发生什么事情，你也不要显得紧张。
Well done! You are always doing a good job!
干得不错！你总是干得很出色！