了然于胸 liǎorányúxiōng to understand clearly Origin Definitions Defs Strokes Stroke Words Sentences Sents 了然 瞭然 liǎorán clear to understand clearly; evident; plain to see于 於 yú preposition in Indicates a location, scope, or time; equivalent to 在 zài胸 xiōng noun heart (bound form) one's heart or mind; the seat of one's thoughts and emotions; breadth of mind or character