7804.occupational(形)職業的
Accidents are an occupational hazard on building sites.
建筑工地上發生意外是職業風險。

7805.occupy(動)占據
The larger table occupied most of the room．
這張大桌子占去了房間的大部分空間。

7806.offend(動)觸怒
I hope they won't be offended if I don't come.
我希望如果我不來的話，他們不會生氣。

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興的。

7808.offensive(形)無禮的
反義詞polite
You will find it difficult to explain away your use of such offensive language.
你使用這樣無禮的語言是很難說得過去的。

7809.ointment(名)藥膏
This is an ointment for burns and scalds.
這是治療燒傷和燙傷的藥膏。

7810.omen(名)預兆
It's an omen of victory．
那是勝利的預兆。

7811.ominous(形)惡兆的
Those black clouds look ominous．
那些烏云看來是惡兆。

7812.omit(動)省略
Several verses of the song can be omitted．
那首歌有好幾句歌詞可以省略。

7813.oppress(動)壓迫
The king oppressed his people with terrible taxes and punishments．
國王以苛捐雜稅和嚴刑來壓迫人民。

7814.optical(形)視覺的
A mirage is an optical illusion.
海市蜃摟是一種視覺上的錯覺。

7815.orbit(名)軌道(動)繞軌道而行
(名):The satellite was launched into orbit around the moon．
衛星被發射進入繞月球運行的軌道。
(動):How many spacecrafts are orbiting the moon?
有多少航天器繞月球軌道飛行？

7816.orchestra(名)管弦樂隊
An orchestra usually plays classical music.
管弦樂隊通常演奏古典音樂。

7817.ordinance(名)法令
The French Foreign Legion was founded by a Royal Ordinance．
法國外籍兵團是按照皇家法令建立的。

7818.ordinarily(副)通常
Ordinarily, they don't work as late as this.
他們通常都不會工作到這么晚。

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

7820.orientation(名)熟悉
I needed some orientation at this stage．
我在這個階段需要熟悉情況。

7821.ornament(名)裝飾品
There is an ornament made of shells on the wall.
墻上有一個貝殼做成的裝飾品。

7822.orthodox(形)傳統的
同義詞traditional
Orthodox Christian churches often have elaborate steeples.
傳統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)郊區
慣用復數
They live on the outskirts of Athens.
他們住在雅典郊區。

7825.overwhelm(動)打敗
He overwhelmed his opponent with his superb technique.
他以高超的技術擊敗了對手。

7826.overwhelming(形)壓倒的
She had the almost overwhelming desire to tell him the truth.
她有強烈的欲望告訴他真相。

7827.oxldation(名)氧化作用
They painted a coat of paint to prevent the oxidation of the ship by seawater.
他們刷了一層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.
飛機上的氧氣面具只用于緊急情況。

7829.pacify(動)平靜鎮定
In spite of my efforts to pacify the baby, he continued crying．
盡管我已盡力哄這嬰兒，可是他還是哭個不停。

7830.pager(名)電子傳呼機
The pager is cheap but only handles minimal amounts of information.
傳呼機便宜但只能處理少量的資訊。

7831.palatable(形)美味的
同義詞tasty
Chinese dishes are exquisitely prepared,
dellcious，and very palatable.
中國萊做得十分精細、美味，非常好吃。

7832.panacea(名)萬靈丹
Lasers are not the panacea that has been presented in the medea.
鐳射并不像媒體報導的那樣是一種萬能藥。

7833.pancake(名)薄煎餅
These pancakes made by my mother are really tasty．
我媽媽做的這些煎餅非常好吃。

7834.panorama(名)全景
From the summit there is a superb panorama of the Alps.
從峰顛俯瞰，阿爾卑斯山壯麗的全景盡收眼底。

7835.parachute(名)降落傘
When his parachute failed, he thought he was a goner.
他的降落傘打不開了，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.
我父母親過去一直吵得你死我活，然而反常的是他們仍然彼此愛著對方。