Ef
abbr. 每面（each face）；超精度（extremely fine）；仰角指示器（Elevation Finder）
🗣️ 情景例句
Did you remember your other appointment for today?
还记得今天的另一个约会吗？
He received full credit for his studies at a previous school.
他在一所先前的学校取得了所有课程的学分。
He's fine, thanks.How's Emma?
他很好，谢谢。埃玛好吗？