4-f
n. [美国英语]；选征兵役制中不及格者免除兵役(者)(指身体、心理、品德等不适于服兵役)的分类
🗣️ 情景例句
Sure. Where are you going?
当然。您要去哪里？
I adore ice cream.
我非常喜欢冰淇淋。
First of all, don't come in here without a teacher.
首先，没有老师领着不要进这儿。