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
Well, I have a proposition for you. I think you know our company. This is my card.
我给你提个建议。我想先请您了解一下我们公司。名片。
What we do willingly is easy.
世上无难事，只要肯登攀。
Have you decided which boat to take, Sir?
先生，您决定用哪只船了吗？