Zf
abbr. 零频率（Zero Frequency）
🗣️ 情景例句
In the section on culture,
在文化这部分，
You may come home with me any time.
你随时可以来我家。
Meanwhile, a number of university students have volunteered to drive buses while the strike lasts.
与此同时，有一部分大学生自愿在罢工期间驾驶公共汽车。