Chinese

		to not leave; to not abandon; to not leave out	one's remaining energy; energy left over
trad. (不遺餘力)		不遺	餘力
simp. (不遗余力)		不遗	余力

Idiom

不遺餘力

1. to do all one can; to do one's utmost; to spare no effort; to go all-out

Synonyms

• 竭盡全力／竭尽全力 (jiéjìnquánlì)
• 全力以赴 (quánlìyǐfù)