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二十、以U开头的核心词汇
ultimate 最后的，最终的 The war ended for us in ～ victory
unanimous 全体一致的，一致同意的 They are ～ in asking for a rise in pay
uncover 揭开，揭露 ～ a dish of food
underestimate 低估 ～ the difficulties of the task
undergo 经历，遭受，忍受 ～ much suffering
underline 在……下划线，强调 Please translate the ～d sentences in the passage
underlie 位于……之下 Many facts ～ my decision
undermine 在……下挖 ～ a wall
undertake 着手做， 从事 ～ an attack
undesirable 不合意的，不受欢迎的 The drug has ～ side effects
uneasy 心神不宁的，不安宁的 be ～uneasy about the future
unfold 展开，打开 ～ a newspaper
uniform 不变的，相同的，均匀，统一的 a ～ temperature
unify 使成一体，统一 become a unified nation
update 更新，使现代化 ～a textbook
upgrade 提高，使升级，改善 ～ products and services
uphold 举起，高举 He upheld his clenched hand
upright 挺直的，垂直的 an ～ seat
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