5068.opposite(形)相反的(介)在……对面
(形): We live further down on the opposite side of the road．
我们住在马路对面再远一点的地方。
(介):I thought she would be small and blonde but she's the complete opposite．
我原以为她是一位身材矫小的金发女郎,但她恰恰相反。

5069.opposition(名)反对
Delegates expressed strong opposotion to the plans.
会议代表们强烈反对这些计划。

5070.optimism(名)乐观主义
We may now look forward with optimism.
我们现在可以乐观地展望未来。

5071.optimistic(形)乐观的、有信心的
反义词pessimiscic
My teacher is very optimistic.
我的老师很乐观。

5072.option(名)选择、选择权
Some people are afraid of flying,which limits their options when traveling．
有些人很害怕坐飞机，这也就限制了他们旅行的选择。

5073.optional(形)可选择的；随意的
You don't have to install this radio in your new car; it's an optional extra.
你没有必要在新车中安装这个收音机；它是一种额外的附属品。

5074.oral(形)口头的
We're having an oral test in class this week.
这星期我们班有一次口试。

5075.orchard(名)果园
Is there an orchard behind her house?
有没有一个果园在她房子后面？

5076.organ(名)风琴；器官
She plays the organ in church.
她在教堂负责弹奏管风琴。
The heart is one of the body's vital organs.
心脏是人体的重要器官之一。

5077.orient(动)以……为方向
Our firm is oriented towards the export side of the business.
我公司业务已转向出口方面。

5078.oriental(形)东方的
I like oriental cherry．
我喜欢东方的樱花。

5079.orphan(名)孤儿
He was an orphan and lived with his uncle．
他是个孤儿，和他叔叔一起生活。

5080.orphanage(名)孤儿院
I founded an orphanaqe last year.
去年我创办了一个孤儿院。

5081.otherwise(副)否则、除此之外
We're committed to the project. We wouldn't be here otherwise．
我们是全心全意投入这项工作的，否则我们就不会到这里来了。

5082.oust(动)驱逐
The rebels finally managed to oust the government from power．
反叛者最后总算夺取了政权。

5083.outbreak(名)爆发、发生
Since the outbreak of the lraq war, people have generally been concerned about the impact of the war on the international energy situation.
自从伊拉克战争爆发以来，人们普遍关注战争对国际能源供求局面的影响。

5084.outcome(名)结果
We are waiting to hear the final outcome of the negotiations.
我们在等待谈判的最终结果。

5085.outfit(名)服装；装备；用具
She was wearing an expensive new ouffit．
她穿着一身昂贵的新衣裳。

5086.outing(名)远足
We went on an outing to the seaside.
我们远足到海边。

5087.outlaw(名)罪犯
He actad a noble outlaw in the play．
在这部戏里他扮演一个贵族逃犯。

5088.outlet(名)出口、出路
She needed to find an outlet for her many talents and interests.
她的多才多艺、兴趣广泛需要找个施展的机会。

5089.outline(动)画出……的轮廓；概述
We outlined our proposals to the committee.
我们向委员会提纲挈领地讲了我们的提案。

5090.outlook(名)看法；展望
My whole outlook on life has changed.
我的整个人生观已改变。

5091.outnumber(动)比……多
The demonstrators were heavily outnumbered by the police.
示威者人数远不及警察的人数。

5092.output(动)生产、输出
Input your order, the computer will output the correct data automatically.
输入你的命令，电脑会自动辅出正确资料。

5093.outrage(名)暴行(动)违反
(名):Residents oppose outrage deeply.
居民们强烈反对暴行。
(动): Many people have been outraged by some of the things that have been said.
许多人都被所说的一些事情给激怒了。

5094.outset(名)起初
At the outset of her career, she was full of optimism but not now.
他在事业上刚开始十分乐观．但现在已今非昔比了。

5095.outstanding(形)杰出的；凸出的；未完成的
同义词striking
A lot of work is still outstanding.
许多工作尚未完成。

5096.outward(形)向外的；外面的；肉体的
Mark showed no outward signs of distress.
马克在外表上没有表现出沮丧的神色来。

5097.oval(形)椭圆形的
Comets move around the sun like planets, but in a long oval pattern.
彗星像行星一样围绕太阳运转，但其轨道是长长的椭圆形状。

5098.overall(形)全面的
There will be winners in each of three age groups，and one overall winner.
三个年龄组将各产生一位优胜者，另有一位总优胜者。