Read Edit View history 若且唯若 ruòqiěwéiruò if and only if Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 若且唯若 · ruòqiěwéiruò · if and only if 2026/03/04 若且唯若 ruòqiěwéiruò if and only if if and only if 一个整数是偶数，若且唯若它能被二整除。 created sense Mar 4, 2026, 02:25 AM