Cnf
abbr. 合取范式（conjunctive normal form）；成本加运费（cost and freight, 等于CFR）
🗣️ 情景例句
Happiness is a personal choice.
快乐是个人的选择。
After dinner, they adjourned to the study to talk.
晚饭后，他们到书房谈话去了。
'At what time did you arrive at the station?'
“您几点钟到的火车站？”