She warned teenage girls to choose their partners carefully .

她警告说，十几岁的女孩要小心选择自己的伴侣。

What 's the worst thing that can happen for a teenage girl ?

一个十几岁的女孩身上能发生最坏的事情是什么呢？

People in their 40s , for instance , often have teenage children .

比如，在人们40多岁的时候，家里通常有处于青少年时期的孩子。

Using street slang would be an easy option in school , says a teenage boy .

一位十几岁的男孩说，街头俚语在学校很容易流行。

Then as now it tended to involve mainly young men and teenage boys .

此后包括现在，黑客都主要是年轻的男子汉或者十几岁的男孩。