But I found my children needed me more when they were teen-agers than they did at age 3 or 4.

但是，我发现我的孩子在十几岁的时候比在三四岁时更需要我。

youdao

This probably isn't a lesson they can understand when they're 6 years old, but when they're teen-agers, they can grasp the concept.

可能在孩子们6岁的时候他们不能理解这一课，但是他们十来岁的时候会弄清楚这一概念的。

youdao

In order to improve teen-agers' quality education, we must optimize the social environment.

为了提高青少年素质教育水平，必须优化社会环境。

youdao

Once you start an advertising campaign aimed at teen-agers, you make movies for teen-agers.

NPR: Is Hollywood Wasting Money Selling Movies to Teens?

He staffed the ships with volunteers, many of them teen-agers, who called themselves the Sea Organization.

NEWYORKER: The Apostate

The honking car horns dissolve into the excited chatter of teen-agers in the lobby.

NEWYORKER: Why to Fools Fall in Love