了然于胸 Save Sign in to save words Traditional (Taiwan): 了然於胸 liǎorányúxiōng ㄌㄧㄠˇ ㄖㄢˊ ㄩˊ ㄒㄩㄥ 男 女 to be well aware to understand clearly idiom Character by character 了(liǎo)finish 然(rán)correct 于(yú)surname Yu 胸(xiōng)chest A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0