Vf
abbr. 很好（very fine）；可变频率（variable frequency）；视频（vision frequency）
🗣️ 情景例句
So, you're an exchange student.
哦，你是一名交换学生。
I wrote novels yesterday.
我昨天在写小说。
It is fairly clear that sleeping period must have some function,
很清楚，睡眠必然具有某种作用。