懂中文 Dong Chinese

鞠躬尽瘁

jū​gōng​jìn​cuì

to bend to a task and spare no effort ; striving to the utmost

Definitions

鞠躬尽瘁 (鞠躬盡瘁) 

jū​gōng​jìn​cuì

to bend to a task and spare no effort (idiom); striving to the utmost

Sources