youth/adolescent/juvenile/teenager.导航词义：青少年

1. youth:n. 少年，年轻人.现在几乎专指年轻的男性，尤用于报纸上，常含贬义。但作为集合名词时，男女青年皆可指，且无贬义。

The street fight was started by a gang of youths.

这场街头打斗是由一伙少年挑起来的。

There are groups of youths playing basketball over there.

成群的小伙子正在那里打篮球。

The youth of the country are being ignored by their leaders.

该国的青年没有受到领导人的重视。

The government calls on the youth to donate their blood voluntarily.

政府号召青年义务献血。

2. adolescent:n. 青少年.与 teenager 基本同义，但更加正式，强调尚不成熟。

An adolescent is often caught up in fantastic thoughts.

青少年常常耽于奇思异想。

His mental capacity never really got beyond that of an adolescent.

他的智力从未真正超过一个未成年人。

3. juvenile:n. 青少年.常为法律术语，强调未成年的人。

The number of juveniles arrested for violent crimes is increasing.

因暴力犯罪而被捕的少年犯人数在上升。

The number of juveniles in the general population has fallen.

总人口中青少年所占比例下降。

4. teenager:n. 青少年.主要指 13 至 19 岁之间的青少年，强调该年龄段群体的自身特点。

teenagers are vigorous.

青少年精力旺盛。

Their band is made up of three cool teenagers.

他们的乐队由3个帅气的少年组成。

I don't get pimples now, but I did when I was a teenager.

我现在不会长青春痘，但我在青春期时却没少长。

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1·He was acting like a lovelorn teenager.

他表现的像一个患有相思病的少年。《柯林斯英汉双解大词典》

2·As a teenager I was self-harming regularly.

我十几岁时经常自残。《牛津词典》

3·Clothes are a safe bet as a present for a teenager.

衣服适合作为送给十几岁孩子的礼物。《牛津词典》

4·He used to give his mother hell when he was a teenager.

他十几岁时常常给他母亲惹麻烦。《牛津词典》

5·So much has changed in the sport since I was a teenager.

自我十几岁以来，该项运动发生了很大变化。《柯林斯英汉双解大词典》

6·She had been fiercely protective towards him as a teenager.

她过去曾极力呵护他这个十几岁的孩子。《牛津词典》

7·Hundreds have joined a police hunt for the missing teenager.

已有几百人和警方一同搜寻一名失踪的十几岁孩子。《牛津词典》

8·There is growing concern over the safety of the missing teenager.

人们对这个失踪少年的安全越来越担心。《牛津词典》

9·As a teenager she formed a strong attachment to one of her teachers.

十几岁时她曾对自己的一位老师产生了强烈的爱慕之情。《柯林斯英汉双解大词典》

10·A man has been arrested in connection with the murder of the teenager.

一名男子因与该谋杀少年案有关而被捕。《牛津词典》

青少年

1·It's very dangerous for a teenager to run away from home.

青少年离家出走是很危险的。

2·That may sound like a description of every teenager on the planet.

这听起来可能像是对这个星球上每个青少年的描述。

3·Of course, that may sound like a description of every teenager on the planet.

当然，这听起来可能像是对这个星球上每个青少年的描述。

4·Tenith Adithyaa, a teenager from India, used UV to make the leaves stay fresh for a year.

来自印度的青少年 Tenith Adithyaa 利用紫外线使这些叶子保持新鲜一年。

5·By the time you become a teenager, many different roads lead to the most important places on the map.

等到你成了青少年，许多不同的道路通向地图上最重要的地方。