Ub
[计] 上限
🗣️ 情景例句
Oh, Somebody's at the door. I have to go.
哦，有人来了，我得去开门。
Car manufacturers must be very uneasy now.
现在汽车制造厂商们无疑都非常不安。
There is a table in the room.
客厅里有张桌子。