Ub
[计] 上限
🗣️ 情景例句
while you're at work.
在你工作的时候。
We are prepared to reconsider amending the contract.
我们可以重新考虑修改合同。
When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed.
不久前，一架轻型客机偏离了航线，在山区坠毁，飞行员丧生。