7804.occupational(形)职业的
Accidents are an occupational hazard on building sites.
建筑工地上发生意外是职业风险。

7805.occupy(动)占据
The larger table occupied most of the room．
这张大桌子占去了房间的大部分空间。

7806.offend(动)触怒
I hope they won't be offended if I don't come.
我希望如果我不来的话，他们不会生气。

7807.offense(名)冒犯
I didn't mean to cause you any offense.
我不是有意冒犯你使你不高兴的。

7808.offensive(形)无礼的
反义词polite
You will find it difficult to explain away your use of such offensive language.
你使用这样无礼的语言是很难说得过去的。

7809.ointment(名)药膏
This is an ointment for burns and scalds.
这是治疗烧伤和烫伤的药膏。

7810.omen(名)预兆
It's an omen of victory．
那是胜利的预兆。

7811.ominous(形)恶兆的
Those black clouds look ominous．
那些乌云看来是恶兆。

7812.omit(动)省略
Several verses of the song can be omitted．
那首歌有好几句歌词可以省略。

7813.oppress(动)压迫
The king oppressed his people with terrible taxes and punishments．
国王以苛捐杂税和严刑来压迫人民。

7814.optical(形)视觉的
A mirage is an optical illusion.
海市蜃搂是一种视觉上的错觉。

7815.orbit(名)轨道(动)绕轨道而行
(名):The satellite was launched into orbit around the moon．
卫星被发射进入绕月球运行的轨道。
(动):How many spacecrafts are orbiting the moon?
有多少航天器绕月球轨道飞行？

7816.orchestra(名)管弦乐队
An orchestra usually plays classical music.
管弦乐队通常演奏古典音乐。

7817.ordinance(名)法令
The French Foreign Legion was founded by a Royal Ordinance．
法国外籍兵团是按照皇家法令建立的。

7818.ordinarily(副)通常
Ordinarily, they don't work as late as this.
他们通常都不会工作到这么晚。

7819.ordinary(形)普通的
It's interesting to see how ordinary people live in other countries.
看看其他国家的普通人怎样生活是很有趣的。

7820.orientation(名)熟悉
I needed some orientation at this stage．
我在这个阶段需要熟悉情况。

7821.ornament(名)装饰品
There is an ornament made of shells on the wall.
墙上有一个贝壳做成的装饰品。

7822.orthodox(形)传统的
同义词traditional
Orthodox Christian churches often have elaborate steeples.
传统的基督教堂都有精致的尖塔。

7823.outrageous(形)粗暴的
He is very outrageous.
他非常的粗暴。

7824.outskirts(名)郊区
惯用复数
They live on the outskirts of Athens.
他们住在雅典郊区。

7825.overwhelm(动)打败
He overwhelmed his opponent with his superb technique.
他以高超的技术击败了对手。

7826.overwhelming(形)压倒的
She had the almost overwhelming desire to tell him the truth.
她有强烈的欲望告诉他真相。

7827.oxldation(名)氧化作用
They painted a coat of paint to prevent the oxidation of the ship by seawater.
他们刷了一层油漆以防止船只被海水氧化。

7828.oxygen(名)氧
Oxygen masks in aircraft are used only in emergencies.
飞机上的氧气面具只用于紧急情况。

7829.pacify(动)平静镇定
In spite of my efforts to pacify the baby, he continued crying．
尽管我已尽力哄这婴儿，可是他还是哭个不停。

7830.pager(名)电子传呼机
The pager is cheap but only handles minimal amounts of information.
传呼机便宜但只能处理少量的资讯。

7831.palatable(形)美味的
同义词tasty
Chinese dishes are exquisitely prepared,
dellcious，and very palatable.
中国莱做得十分精细、美味，非常好吃。

7832.panacea(名)万灵丹
Lasers are not the panacea that has been presented in the medea.
镭射并不像媒体报导的那样是一种万能药。

7833.pancake(名)薄煎饼
These pancakes made by my mother are really tasty．
我妈妈做的这些煎饼非常好吃。

7834.panorama(名)全景
From the summit there is a superb panorama of the Alps.
从峰颠俯瞰，阿尔卑斯山壮丽的全景尽收眼底。

7835.parachute(名)降落伞
When his parachute failed, he thought he was a goner.
他的降落伞打不开了，他想他完了。

7836.paradoxically(副)反常地
My parents used to fight like cat and dog yet paradoxically they still loved each other.
我父母亲过去一直吵得你死我活，然而反常的是他们仍然彼此爱着对方。