Umps
abbr. unit mission planning system 部队任务计划系统; uridine monophosphate synthase 尿苷一磷酸合酶
🗣️ 情景例句
She quit her job.
她辞职不干了。
When the tree is fallen, every one runs to it with his axe.
大树一倒下，人人持斧来。
It doesn't matter.
不要紧。