To exhaust all one's efforts and mental energy; to be utterly worn out from strenuous mental work or profound concern; to have spent one's heart and soul.
为了完成这项复杂的科研项目，他常常伏案工作到深夜，真是血竭髯枯，付出了所有心血。
To complete this complex research project, he often worked at his desk until late at night, truly exhausting all his mental energy and dedicating his heart and soul.
Era:
Early Modern
Frequency:
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