docile：　easily trained or controlled
    doleful：　dismal, mourful來(lái)源：考試大
    drought：　a long period of dry weather
    dubious：　feeling doubt　dumbfound astonish
    efface：　rub or wipe out, obliterate
    elucidate：　to make understandable
    enchant：　charm, delight來(lái)源：考試大
    endeavor to make an effort, to try very hard
    endorse：　approve, support a claim or statement
    enthral：　take the whole attention, enslave來(lái)源：考試大
    exploit：　to use for selfish advantage or profit
    extensive：　far-reaching來(lái)源：考試大
    extol：　to praise highly
    flimsy：　lacking solidarity, strength
    fraud：　 a fault, a deception來(lái)源：考試大
    gaudy：　 too bright and showy
    ghastly：　death-like, pale and ill
    grumble：　to complain來(lái)源：考試大
    harass：　worry, trouble
    heretic：　very busy; active來(lái)源：考試大
    impediment smth that hinders (esp in speech)　indigenous native
    insatiate：　never satisfied
    intrepid：　fearless來(lái)源：考試大
    irate：　angry
    jeopardy：　danger
    leash：　 control來(lái)源：考試大
    loafer：　an idle, lazy person
    lucrative：　profitable來(lái)源：考試大
    lustrous：　bright; shining
    malign：　to slander