Cnf
abbr. 合取范式（conjunctive normal form）；成本加运费（cost and freight, 等于CFR）
🗣️ 情景例句
Is there any more plain paper?
还有没有更多的白纸？
Did you send it to him yourself?
你自己亲自送给他吗？
Working on a farm
在农场劳动