noun 下载 🔗分享 努力,费力,辛劳 An expenditure of physical or mental effort. Examples : "After the morning's physical exertions, the athlete felt tired but satisfied. " 经过上午的体力辛劳,这位运动员虽然感到疲惫,但也感到很满足。 body mind energy action physiology 与AI对话词汇游戏阅读练习