adjective🔗Share费力的，艰苦的 Having great vigour or energy"The marathon training was very strenuous, requiring a lot of energy and effort. "马拉松训练非常艰苦，需要付出大量的精力和努力。energybodyactionphysiologyChat with AIVocabulary GamePractice Reading
adjective🔗Share费力的， 艰巨的. (of a task) Requiring great exertion; very laborious"The marathon training was very strenuous, requiring hours of running each day. "马拉松训练非常艰巨，每天都需要跑好几个小时，非常费力。workconditionenergyabilityChat with AIVocabulary GamePractice Reading
