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
In that case, it's OK.
这么说 我就去。
I want to make a local call.
我要打个市内电话。
I don't know.I've already had my holiday this year.
我不知道。今年我已度过假了。