Cnf
abbr. 合取范式（conjunctive normal form）；成本加运费（cost and freight, 等于CFR）
🗣️ 情景例句
He ventured to speak to her.
他鼓起勇气向她说话。
This product is doing very well in foreign countries.
这种产品在国外很畅销。
She intended to dress up as a ghost and as she had made her costume the night before,
她打算装扮成鬼的模样。头天晚上她已把化装服做好，