她有两个十几岁的女儿。

She is the mother of two teenaged daughters.

《柯林斯英汉双解大词典》

他十几岁时常常给他母亲惹麻烦。

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

《牛津词典》

麦当娜是她十几岁时的偶像。

Madonna was her teenage heroine.

《牛津词典》

the first was it didn't bother with the established baseline of what percentage of teenage girls had received an unwelcome sexual advance in the day to day actions with people.

第一个问题是,它并没有涉及到底量度的基准,到底这些十几岁的女孩子们,在白天与人正常交往的时候,所受到的性挑逗的比例为多少。

麻省理工公开课 - 媒体、教育、市场课程节选

When he was a teenager and he would draw cartoons for them and he even dabbled in children's books

当他十几岁的时候，他为他们画漫画，也涉猎儿童图书，

和男朋友在一起 - SpeakingMax英语口语达人

I mean, the equivalent of a healthy teenage male slave, if you could sell him for $1000.00 in 1860 it's about the same price of a good Toyota Camry today.

我的意思是,一个健康的十几岁的男性奴隶的价值,假如你在1860年把他卖到一千美金的话,那么在今天就大约相当于,一辆不错的丰田佳美汽车的价格

耶鲁公开课 - 美国内战与重建课程节选