to bend to a task and spare no effort unto one's dying day (idiom); striving to the utmost one's whole life; with every breath in one's body, unto one's dying day
鞠躬尽力鞠躬盡力ju1 gong1 jin4 li4
to bend to a task and spare no effort (idiom); striving to the utmost; same as 鞠躬盡瘁|鞠躬尽瘁