Cemf
abbr. 反电动势（Counter Electromotive Force）
🗣️ 情景例句
You need some rest to help you get better quickly.
需要多休息， 好让你很快恢复。
My hobby is collecting stones.
我的嗜好是收集石头。
How do you go to work everyday?
你每天怎么上班？