This is the 18893rd most frequent Korean word.
심혈을
"심혈을" refers to "one's heart and soul" or "utmost effort and dedication."
심혈을 기울이다: To put one's heart and soul into something, emphasizing effort and dedication.
그는 자신의 작품에 심혈을 기울였습니다.
He devoted his utmost effort to his work.
심혈을 담다: To imbue something with one's heart and soul, emphasizing personal investment and emotional involvement.
그녀의 심혈을 담은 이 소설은 많은 사람들에게 감동을 주었다.
This novel, into which she poured her heart and soul, touched many people.
심혈을 필요로 하다: To require significant effort and focus, denoting the demand for intensive dedication.