obey 服从,遵守
object 物体, 对象
oblong 矩形的
obtain 得到
obivous 明显的
occupation 占领
ocean 海洋
old 老的
of ---的
oil 油
on 在---上面
one 1
once 一次
on-line 联机的
open 打开
optional 选择的
orange 橘子
order 订单,命令
original 原始的
other 其他
out 外面
our 我们的
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; 暗中破坏 ~ 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