嘔心瀝血 [ㄡˇ ㄒㄧㄣ ㄌㄧˋ ㄒㄩㄝˋ; ou3 xin1 li4 xue4] lit. to spit out one's heart and spill blood (idiom) to work one's heart out blood, sweat and tears ◄ ►