Read Edit View history 乌云 wūyún HSK6 dark cloud Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 乌云/烏雲 · wūyún · dark cloud 2026/03/04 乌云 / 烏雲 wūyún dark cloud black cloud 天空中布满了乌云，看样子要下大雨了。 noun created sense Mar 4, 2026, 02:25 AM