Lof
abbr. 最低操作频率（lowest operating frequency）；力线（Line of Force）；本机振荡器滤波器（Local Oscillator Filter）；本机振荡器频率（Local Oscillator Frequency）
🗣️ 情景例句
and wait until you're ready to go back to work.
而且会等你准备好了才回去工作。
In fact she's 20 years old.
她只有二十岁。
How long are you staying in Xi'an?
你要在西安呆多久？