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1·The river is very long and flows through many beautiful villages.

这条河很长，流经许多美丽的村庄。youdao

2·We had a long conversation about our future plans.

我们就未来的计划进行了一次长时间的交谈。youdao

3·He has a long list of achievements in his career.

他在职业生涯中有一长串的成就。youdao

4·The long - awaited concert finally took place last night.

期待已久的音乐会昨晚终于举行了。youdao

5·This country has a long history and rich culture.

这个国家有悠久的历史和丰富的文化。youdao

6·She wore a long dress to the party.

她穿着一条长长的连衣裙去参加派对。youdao

7·We took a long walk in the park on a sunny day.

我们在阳光明媚的日子里在公园里进行了一次长时间的散步。youdao

8·The long journey gave us a lot of wonderful memories.

这次漫长的旅程给我们留下了许多美好的回忆。youdao

9·There is a long line of people waiting to buy tickets.

有一长队人在等着买票。youdao

10·They have been friends for a long time.

他们已经是很长时间的朋友了。youdao

长

1·The oil slick is now 35 miles long.

这层浮油目前长35英里。《柯林斯英汉双解大词典》

2·Doctors often work very long hours.

医生经常长时间工作。《牛津词典》

3·Workers toiled long hours.

工人们长时间辛苦工作。《柯林斯英汉双解大词典》

4·These jeans are too long in the leg.

这条牛仔裤的裤腿太长。《牛津词典》

5·She wore her hair in a long braid.

她留着长辫子。《柯林斯英汉双解大词典》

久

1·It was on TV not (so) long ago.

电视不（很）久以前播出了这个节目。《牛津词典》

2·The reservoir was low after the long drought.

久旱之后水库的水位下降了。《牛津词典》

3·The prospect of a long wait in the rain did not appeal.

想到要在雨中久等使人扫兴。《牛津词典》

4·If you keep a medicine too long, it may lose its potency.

药物存放太久，可能会失去效力。《牛津词典》

5·What amazes me is how long she managed to hide it from us.

使我惊诧的是，她竟然能把这件事瞒了我们这么久。《牛津词典》

长时间

1·There was an awkwardly long silence.

有一段令人尴尬的长时间的沉默。《柯林斯英汉双解大词典》

2·The bureaucrats dallied too long.

官僚们延误了太长时间。《柯林斯英汉双解大词典》

3·Sorry I took so long.

对不起，我用了这么长时间。《柯林斯英汉双解大词典》

4·It's frustrating to have to wait so long.

要等这么长时间，真令人懊恼。《牛津词典》

5·Repairs to the cable did not take too long.

维修电缆没花太长时间。《柯林斯英汉双解大词典》

长长的

1·Sue has long dark hair.

苏留着长长的黑发。《牛津词典》

2·Her long black hair bounced as she walked.

她长长的黑发在她走路时摆动着。《柯林斯英汉双解大词典》

3·His long legs bent up in the confined space.

他长长的双腿蜷缩在有限的空间里。《柯林斯英汉双解大词典》

4·Her long fair hair was knotted and straggly.

她那长长的金发散乱而打结。《柯林斯英汉双解大词典》

5·He pictured her with long black braided hair.

他想像她扎着长长的黑麻花辫。《柯林斯英汉双解大词典》

悠久

1·It boasts a fairly long history.

它拥有相当悠久的历史。

2·Asia has long tradition of tea-drinking.

亚洲有饮茶的悠久传统。

3·Many of these crafts have long histories.

这些手工艺品大多都拥有悠久的历史。

4·The long history and colorful culture of China attract many foreigners to learn Chinese.

中国悠久的历史和丰富多彩的文化吸引了许多外国人学习汉语。

5·Aspergillus nidulans has a long history of use.

“构巢曲霉”有着悠久的使用历史。

长久的

1·We thought long and hard before deciding to move house.

我们经过长久慎重的考虑之后才决定搬家。《牛津词典》

2·What I really want is to live healthily for as long as possible.

我真正想要的是尽可能长久、健康地活着。《柯林斯英汉双解大词典》

3·He suffered a long series of illnesses with tremendous dignity and fortitude.

他在病魔的长久折磨下表现出了高度的尊严和刚毅。《柯林斯英汉双解大词典》

4·His inability to stay at one job for long had finally proved too much for her.

他干什么工作都不能长久，终于让她无法忍受。《柯林斯英汉双解大词典》

5·The administration knows that's their trump card and will keep playing it as long as they can.

政府知道那是他们的王牌，会尽可能长久地使用它。《柯林斯英汉双解大词典》

(1)no longer不再

(1)as long as只要；和…一样长

(1)long timeadj. 长期的（持久的）；长时间；好久好久

(1)for long长久

(1)for a long time很长时间，很久

(1)how long有多久