To put one's heart and soul into something; to devote oneself wholeheartedly and work very hard on a task or cause.
彼は新しい研究プロジェクトに心血を注ぎ、毎日遅くまで実験室に残った。
He put his heart and soul into the new research project and stayed in the lab late every day.
職人は一つ一つの器に心血を注いで美しい仕上がりにした。
The craftsman poured his heart into each piece, producing beautiful results.
子供の教育に心血を注ぐ親も多い。
There are many parents who devote themselves wholeheartedly to their children's education.