Read Edit View history 充要条件 chōngyàotiáojiàn necessary and sufficient condition Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 充要条件/ 充要條件 chōngyàotiáojiàn necessary and sufficient condition 获得成功的充要条件是努力和机遇。 Edit Delete References Add reference No references for this word.