Efs
(ef 的复数) abbr. 每面（each face）；超精度（extremely fine）；仰角指示器（Elevation Finder）
🗣️ 情景例句
It's midnight.
都午夜了。
I'm not really sure about that. Mr. Jiang should know the answer to that.
关于那事我不敢确定，蒋先生应该知道答案。
I went there three days ago.
我三天前去过那儿。