4004.due(形)到期的
Most of the problems were due to human error.
多數問題都是人為錯誤造成的。

4005.dull(形)遲鈍的；單調的
同義詞blunt
Life in a small town could be deadly dull．
小城鎮的生活可能會非常沒意思。

4006.dumb(形)啞的；愚笨的(名)啞巴
(形):We all sat there in dumb silence.
我們都驚訝得說不出話來了。
(名):She was born deaf and dumb.
她天生又聾又啞。

4007.dumpling(名)水餃
I'll invite you to eat dumpling next time if you like.
如果您愿意，下次我請您吃餃子。

4008.duty-free(形)免稅的
We bought a load of duty-free goods at the airport.
我們在機場買了許多免稅商品。

4009.DVD(名)數碼影音光碟
digital vidio disk的縮寫
I enjoy watching DVD better than watching TV.
比起看電視，我更喜歡看DVD。

4010.earnest(形)認真的
同義詞devoted
She is earnest in her work.
她工作很認真。

4011.earnings(名)收入、工資
慣用復數
He soon spent all his earnings．
他不久就把所賺得的錢全花光了。

4012.earnestly(副)認真地
The work on the house will begin earnestly on Monday．
這棟房子的修建工作將在星期一正式開始。

4013.ease(動)減輕(名)容易
(動): The government is doing its best to ease the tension in that area.
政府正在竭盡全力來緩和那個地區的緊張局勢。
(名):Their team won the game with ease.
他們隊輕松地贏了那場比賽。

4014.Easter(名)復活節
Today is Easter.
今天是復活節。

4015.eastern(形)東方的
In the eastern part of the Unitad Statas，summer tamperatures are very differenrt from winter temperatures．
在美國東部，夏天的溫度和冬天的溫度很不相同。

4016.echo(動)引起共鳴(名)回音、回聲、回響
(動): The gunshot echoed through the forest.
槍炮聲在林中回蕩。
(名): There was an echo on the line and I couldn't hear clearly.
電話里有回音，我聽不清楚。

4017.ecology(名)生態
Oil poiiution could damage the ecology of the coral reefs.
石油污染可能破壞珊瑚礁的生態環境。

4018.economic(形)經濟的、經濟上的
They bought an old house for economic reasons.
出于經濟上的原因他們買了一間舊房子。

4019.economical(形)節儉的、經濟的
As is generally accepted,econamical growth is determined by the smooth development of production.
正如普遍認為的那樣，經濟增長是由生產的穩定發展決定的。

4020.economically(副)經濟上地；節約地
The factory is no longer economically viable.
這個工廠已沒有經濟效益了。

4021.economics(名)經濟
慣用復數
The third world economics are not optimistic.
第三世界國家的經濟狀況并不樂觀。

4022.economist(名)經濟學家
Some economists strongly believe in private enterprise.
有些經濟學家非常贊成私營企業。

4023.economy(名)經濟、節約
Foreign disinvestment and the exclusion of South Africa from world capital markets after 1985 further weakened its economy.
國外撤資以及被排斥在世界資金市場之外削弱了1985年以后的南非經濟。

4024.edge(名)邊緣
Don't put that glass so near the edge of the table.
別把那個玻璃杯放在離桌邊太近的地方。

4025.edible(形)可食用的
The food at the hotel was barely edibie.
這家旅館的食物簡直不能入口。

4026.editorial(名)社論(形)編輯的；主管的
(名):John writes editorials for the newspaper．
約鞠為這家報社撰寫社論。
(形):Mandy expanded her editorial staff.
曼蒂擴大了她的編輯部。

4027.educate(動)教育、教導
Some schools teach,but fail to educate their students.
有些學校只會教書而不會育人。

4028.educated(形)受過教育的
He's a Princeton-educated Texan．
他是受過普林斯頓大學教育的德克薩斯人。

4029.education(名)教育
There should be closer links between education and industry.
教育界與產業界之間應該有更緊密的聯系。

4030.educational(形)教育的、有教育意義的
Watching television can be very educational.
看電視可以使人受到很多教益。

4031.educator(名)教育家、教育工作者
Her precursor as school principal was an aminent educator.
她在擔任校長前是一位卓越的教育家。

4032.eel(名)鰻魚
He that will catch eel must disturb the flood.
混水摸魚。

4033.effect(名)影響、結果、作用
Modern farming methods can have an adverse effect on the environment.
現代農業耕作方法可能對環境造成負面影響。

4034.effective(形)有效的
Long prison sentences can be a very effective deterrent for offenders.
判處長期徒刑可對違法者起到強而有力的威懾作用。