operose

adj.  刻苦的;费力的;困难的



英英释义

adj

  1. characterized by effort to the point of exhaustion
    1. worked their arduous way up the mining valley
    2. a grueling campaign
    3. hard labor
    4. heavy work
    5. heavy going
    6. spent many laborious hours on the project
    7. set a punishing pace

    Synonym:    arduousbackbreakinggruelinggruellinghardheavylaboriouspunishingtoilsome