Read Edit View history 了然于胸 liǎorányúxiōng well aware Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 了然于胸/了然於胸 · liǎorányúxiōng · well aware 2026/03/04 了然于胸 / 了然於胸 liǎorányúxiōng well aware (idiom) to be well aware; to understand clearly 虽然大家都没明说，但他对整个计划已经了然于胸。 expression created sense Mar 4, 2026, 02:25 AM