Ef
abbr. 每面（each face）；超精度（extremely fine）；仰角指示器（Elevation Finder）
🗣️ 情景例句
I'm afraid I didn't get on very well in the exam.
我这次考试恐怕不太顺利。
A fool always finds a greater fool than himself.
愚人总以为旁人比自己更傻。
concludes that it must be the gateway to world that lies beyond.
日落处想必是通往遥远世界的大门。