Uff
abbr. 里约州联邦大学（Universidade Federal Fluminense）；通用文件格式（Universal File Format）；超滤衰竭（Ultra Fihration Failure）
✅ 同义词
🗣️ 情景例句
I have to go out and hand out fliers.
我要出去派传单。
How long is the ride?
要坐多久？
But some time later it began to rain.
但过了一阵子。天下起雨来，