unlawful
unlawful/ʌnˈlɔ:ful/adj.非法的；违法的：the use of unlawful violence非法使用暴力They claimed the ban was unlawful.他们宣称禁令是非法的。Discrimination on the grounds of sex or ra···
unleash
unleash/ˈʌnˈli:ʃ/vt.解开…的束缚；释放能量：The failure of the talks could unleash more fighting.会谈失败可能会引发更激烈战斗。The full force of his rage was unleashed against ···
unless
unless/ənˈles/conj.1.如果不(=if not): You will fail unless you work hard.如果你不努力工作，你就要失败。I will not go unless I hear from him. (=I will not go if I don’t hear from···
unlike/unlikely
unlike/ˈʌnˈlaik/ I.adj.不相似的，不同的：The two cases are quite unlike.这两种情况完全不同。I never saw twins who were so unlike.我从未见过那么一点都不像的双生子。‖II.prep.不像···
unload
unload/ˈʌnˈləud/vt.&vi.(［反］load)（从…）卸货：unload a truck从卡车上卸下货物；unload cargo from a ship从船上卸下货物The ships will unload tomorrow.这些船明天卸货。
unnecessary
unnecessary/ʌnˈnesisəri/adj.(［反］necessary)不必要的，不必需的：Some food is unnecessary to life有些事物是生命不必要的。It is unnecessary that you (should) do so.你不必要这样做···
unpleasant
unpleasant/ˈʌnplezənt/adj.(［反］pleasant)使人不愉快的，讨厌的：That room is unpleasant to work in.那个房间令人感到不舒适。What unpleasant weather!多么讨厌的天气！
unprecedented
unprecedented/ʌnˈpresidəntid/adj.前所未有的，无前例的：an unprecedented success空前的成功；a historically unprecedented growth in retirement at a fixed age在固定年龄退休人数史无···
unsettle
unsettle/ʌnˈsetl]/vt. 1.扰乱，使不安宁：an unsettling conversation搅乱人心的谈话The crisis has unsettled financial markets.危机使金融市场动荡不安。Will a change of schools unsett···
