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 all sounds so easy.
一切听起来竟是如此简单。
We've arranged our schedule without any trouble.
我们已经很顺利地把活动日程安排好了。
Two men took the parcel off the plane and carried it into the Customs House.
有两个人把包裹拿下飞机，进了海关。