extend/lengthen/prolong.导航词义：延长

1. extend:v. 延伸，延长.多指在空间、时间、面积等方面延长或扩展。

Our summer vacation extended into September.

我们的暑假延至9月。

He wanted to extend his garden.

他想要扩建花园。

My farm extends as far as the river.

我的农场一直延伸到河边。

2. lengthen:v. （使）延长，（使）加长.指在长度或时间上拉长或延长。

His trousers were lengthened.

他的裤子放长了。

Nights are lengthening with the coming of winter.

随着冬天的来临，夜晚渐渐变长了。

To save time is to lengthen life.

节省时间就是延长生命。

3. prolong:v. 延长，拖延.通常指时间上的延长，含超过正常限度之意。

He tried hard to prolong his mother's life.

他尽一切努力来延长母亲的生命。

The treaty has been prolonged for another 5 years.

这个条约又延长了5年。

全部

1·It seems commonly believed that companies are not motivated to prolong their products' lifespan.

人们似乎普遍认为，公司没有动力去延长产品的寿命。

2·In government laboratories and elsewhere, scientists are seeking a drug able to prolong life and youthful vigor.

在政府实验室和其他地方，科学家们正在寻找一种能够延长寿命、让人保持年轻活力的药物。

3·Extreme high-performance sports may lead to optimal cardiovascular performance, but they quite certainly do not prolong life.

极限高强度运动可能会带来最佳的心血管功能，但这些运动肯定无法延长寿命。

4·The operation could prolong his life by two or three years.

这次手术可使他多活两三年。《牛津词典》

5·Isoprinosine and muramyl dipeptide (MDP) could promote animal immune function, and prolong the sleeping time of mice and rabbits.

异斯皮洛宁和鼠基二肽（MDP）可以促进动物的免疫功能，并延长小鼠和兔子的睡眠时间。

6·Medical devices help to save and prolong life.

医疗装置有助于挽救生命并延长生命。

7·Time will prolong time, and life will serve life.

时间将延长时间的存在，生活也将服务于生活。

8·The deep cuts will only prolong Greece’s recession.

这种开支大幅削减只会延长希腊的衰退。

9·The deep cuts will only prolong Greece's recession.

这种开支大幅削减只会延长希腊的衰退。

10·That would prolong the crisis to the detriment of all.

如此一来将会延长危机对所有成员国的损害。

延长

1·In government laboratories and elsewhere, scientists are seeking a drug able to prolong life and youthful vigor.

在政府实验室和其他地方，科学家们正在寻找一种能够延长寿命、让人保持年轻活力的药物。

2·Extreme high-performance sports may lead to optimal cardiovascular performance, but they quite certainly do not prolong life.

极限高强度运动可能会带来最佳的心血管功能，但这些运动肯定无法延长寿命。

3·Isoprinosine and muramyl dipeptide (MDP) could promote animal immune function, and prolong the sleeping time of mice and rabbits.

异斯皮洛宁和鼠基二肽（MDP）可以促进动物的免疫功能，并延长小鼠和兔子的睡眠时间。

4·That would prolong the crisis to the detriment of all.

如此一来将会延长危机对所有成员国的损害。

5·We know what to do to prevent infections and save or prolong lives.

我们知道该怎么去做，来预防感染并且拯救或者延长生命。

拖延

1·Mr Lemarchand, tighter, more academic but equally passionate, convincingly argues that, although natural resources may prolong wars, they do not start them.

勒马耳尚先生口风更紧、更有学术色彩，但同样态度强烈，他指出，虽然自然资源可能拖延战争，但这不是战争的起因。

2·If you're facing a tough and difficult situation, don't let it exhaust you to the point where all your efforts actually prolong the problem and waste your resources.

如果你正面临焦灼的局面，而你花上所有精力来解决问题的方式只是拖延时间的话，这个时候你就该向别人求助或后退几步想清楚，换一种看问题的方式。

3·A career awaits you beyond the laboratory of your graduate student days. Do not prolong moving on to new challenges.

在你研究生实验生涯之后，一个新的机会在等着你。不要拖延，继续向一个新挑战前进。

4·Clear evidence of his intent is to prolong the ritual.

显然他意在拖延典礼时间。

5·Arbitrarily fixed prices and arbitrarily limited profits can only prolong shortages and reduce production and employment.

硬性管制价格和硬性管制利润，只会使供不应求拖延更久，并使生产和就业下滑。