uproar 骚乱，骚动The public ～ over unclear-radiation hazards continues to mount

upset 弄翻，打翻 I’ve ～ a tin of paint on the carpet

up-to-date 时新的，新式的，现代化的They are ～ on recent developments in the world computer industry

urge 推进，鼓励 The president ,～d on by his staff, has decided to attend the talks

urgent 紧迫的，紧要的 He left the country on ～ business

utilize 利用 ～ solar energy

utter 发出(声音等)，说，吐露 ～ the truth

vacant 未被占用的 a ～ seat in a bus

vague 含糊的，不明确的，模糊的 a ～ answer

vain 徒劳的，无效的 ～ efforts

valid 有根据的 a ～ excuse

versatile 多才多艺的 a ～ man

versus 诉讼，竞赛等中以……为对手 The match tonight is China ～ Japan

vertical 垂直的，立式的 a ～ engine

veto 否决，否决权，否决权的行使 The rest of the committee could not accept the ～

vibrate 使震动，使摆动 His heavy footsteps upstairs made the old house ～