[ig'zan]n.努力，尽力 exertion make exertions Exert:vt.竭尽全力， During the competition,she exerted great efforts to eliminate mistake. 回exertion [ig'zə:ʃən] n.努力, 尽力 make exertions Exert : vt. 竭尽全力, During the competition, she exerted great efforts to eliminate mistake