A 16-year-old boy's tendency to skateboard without a helmet is very normal.

一个16岁的男孩玩滑板不戴头盔是很正常的。

youdao

A 16-year-old asked a stranger at a grocery store to buy him and his mother some food in exchange for carrying the man's groceries to his car.

在杂货店，一名16岁的少年请求一位陌生人给他和他的母亲买一些食物。作为交换，他帮陌生人把买的东西搬到他的车上。

youdao

I was a 16-year-old boy.

我是一个16岁的男孩。

youdao

But his mother's claim that he is a 16-year-old juvenile could pose a problem for prosecutors seeking the maximum sentence of life imprisonment.

VOA: standard.2009.04.22