ex·er·tion /ɪɡˈzɜːʃən/ n. 1. 努力,尽力;费力 make one's best exertions 作最大的努力 physical (mental) exertion 竭尽体力(智力) The doctor says he must avoid all exertion. 医生说他必须避免任何劳累。 He stood gasping with exertion after reaching the summit of the hill. 他爬上山顶后,站在那儿累得直喘气。 2. 运用,行使;发挥;施加 the exertion of authority 行使权力