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
A credit card is very useful when you go traveling.
当然旅游的时候，信用卡很有用。
Which one do you want to buy?
你买哪一个？
How old are you?
你们多大了？