C2 to do everything you can to achieve a good result, especially when looking for somethingC2 to do everything you can to achieve a good result, especially when looking for something
(尤指寻找东西时)竭尽全力,不遗余力 He left no stone unturned in his search for his natural mother. 他不遗余力地寻找自己的亲生母亲。