extend和expand有何区别

如题所述

extend [ik'stend]
vt.
拉开,拉出,拉长;延长;使延伸;使达到:
例句: The carpenter extended the measuring tape as far as it would go.

木匠把卷尺拉长到不能再拉为止。
延伸,延长(如绳、墙、队列等):
例句: The cord has been extended between two bamboo poles.

在两根竹竿之间拉起了一根绳子。
伸,伸出(手臂或手),伸开,展开:
例句: to extend one's hand in greeting

伸出手表示欢迎
to extend a helping hand to the poor

对穷人伸出援助之手
(尤指向水平方向)伸长(如身体、四肢等),使(弯曲的肢体)伸直,使挺直:
例句: to extend one's body on the bed

平躺在床上
to extend your arms horizontally

将手臂伸平
延长…的时间,使展期,使延伸,拖长:
例句: to extend a visit

延长访问时间
to extend the deadline until the end of the month

把截止日期放宽到月底
向各方向展开,扩展:
例句: A huge tent was extended over the field.

一顶大帐篷在原野上扩展开来。
扩大…的范围(或应用),扩大…的影响(或作用);扩展(词义);扩充,使扩大,使更广泛:
例句: The European powers extended their authority in Asia.

欧洲列强在亚洲扩大他们的管辖权。
提供;给予;赠予;致:
例句: to extend aid to needy scholars

向贫困的学者提供帮助
to extend help to poor people

帮助穷人
【财政学】推迟(原承诺的债务偿还期),延期归还(贷款、抵押借款等),宽限:
例句: to get the credit extended

使那笔信贷展期
把…掺杂(或掺假),(掺杂以)增加…的量,把(廉价的次货)掺入以增加(货物等)的体积:
例句: to extend wine with water

在酒里掺水
to extend ground meat with flour

把面粉掺入肉糜中
促进,推动;发展;增进;to extend the use of the computers 推广计算机的运用
发出(邀请、欢迎等):
例句: to extend an invitation

发出邀请
to extend a warm welcome to someone

向某人表示热烈欢迎
扩写出(速记等)的全文
【簿记】
把(数字)转入另一栏,把…转栏
写出…的金额;算出…的总额
【法律】
[英国英语]对(地产、财产等)估价
(根据扣押令)征用,扣押,没收,占有(土地)
【骑马术】使(马)迅跑(或全速奔驰),全力驱策(马等)
使(自己)全力以赴,使竭尽全力:
例句: She was fully extended in the swimming race but she still came last.

在游泳比赛中,她竭尽全力,结果还是游了个末名。
(美国海军陆战队员)再服役(可重新申请入伍或延期退伍)
[古语] 夸张,夸大
[废语]强占,夺取
vi.
伸,伸展,展现,伸直;扩展;扩充;连绵:
例句: The plateau extends for many miles.

高原连绵许多英里。
The border extends as far as the river.

边界一直延伸到河边。
延伸,(在范围或应用上)及到,达到(某一点):
例句: His power extends over the whole country.

他的势力扩大到全国。
The regulations do not extend to pupils.

这些规则不涉及小学生们。
(在长度、面积、范围等方面)增加,增大,扩大;变长:
例句: The country's trade extended from China to Europe.

该国的贸易从中国扩大到了欧洲。
伸出,突出:
例句: the big tree that extends out over the small house

小房子顶上伸出的一棵大树
延长,延期,延续;继续:
例句: The cold wave extended into April.

寒潮一直延续至4月份。
持续存在;存在;实际上有:
例句: the Soviet Union that extended for more than 70 years

延续了70多年的苏联
【军事】疏开;散开

expand [ik'spænd]
vt.
(在程度、大小、尺寸、容积、体积、范围、区域等方面)扩大,扩展,扩充,增加;使膨胀,使扩张,使伸展;发展;【军事】扩编:
例句: They hope to expand their company.

他们希望扩大公司的规模。
Heat expands most metals.

加热使大多数金属膨胀。
使伸开,伸张,展开,张开(叶、花瓣、翅或帆等):
例句: The eagle expanded its wings.

鹰展开双翅。
Flowers expanded their petals in the sunshine.

花瓣在阳光下绽开。
扩展(题目、论题、思想等);详细展开,详谈,详述,更充分地阐述;增述;增订(词典等):
例句: to expand a short story into a novel

把一篇短篇小说扩写成一部长篇小说
to expand a phrase into a sentence

把词组扩充成句子
把(缩略式、方程式等)全部写出:
例句: to expand an equation

展开方程式
【数学】
重写(算式)以显示因数的乘积
重写(算式)表示出和、积等特殊项
展开:
例句: to expand a function in a power series

把一个函数展开成幂级数
vi.
(在程度、大小、范围等方面)变大,扩大,扩张,扩展;发展;增长;推广开来;膨胀:
例句: The mind expands with experience.

经验使人心胸开阔。
Most metals expand with heat.

大多数金属受热膨胀。
展开,张开,伸展:
例句: The buds had not yet expanded.

花蕾尚未绽开。
进一步阐述,详述,详谈,充分叙述 (on, upon):
例句: to expand on a statement

详谈一份声明
to expand on a topic

阐述一个题目(或论题)
变得和蔼可亲;变得愿意交谈;感到心情舒畅,感到心旷神怡,热情洋溢:
例句: The flattery made her expand.

那些奉承使她心花怒放。
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第1个回答  2008-12-09
用法有区别,前者用于具体事物,后者多是抽象事物。比如:市场的扩大延伸,就是expand。管道设施的架设延伸,就用extend本回答被提问者采纳
第2个回答  2008-12-08
extend v.伸开,舒展(to stretch out a part of your body);
扩大;延长[建筑或道路等](to make a building,road etc bigger or longer)
延续,持续(to continue to happen or exist for a certain period of time)
延长,推延(to increase a period of time that has been agreed ,especially in order to finish a job or pay money that you owe)
延伸,伸展(to continue for a particular distance or over a particular area);
使竭尽全力(to make someone use all their strength , intelligence etc,in order to archieve good results)
提供,给予,表示(formal to offer someone help,sympathy,thanks etc)
延伸,扩大(if you extend your control,influence etc or if it extends over sth. ,it becomes more powerful)

expand v.扩大(to become larger in size,number,or amount,or to make sth. become larger)
增加[活动量];扩展[活动范围](to increase the amount or range of an activity)
(使)[业务]扩展(if a company ,business etc expands or if someone expands it,they open new shops,factories etc)
变得更自信[友善](to become more confident or friendly)
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