When Theodore was thirteen years old, he got into an argument with two other boys.

VOA: special.2010.08.05

The study was, eleven- and 12-year-old boys at a camping program.

实验中有一些11，12岁的男孩,参加一个野营活动。

耶鲁公开课 - 心理学导论课程节选

I'm reminded of the old adage of the Boys Scouts that I will bring to Virginia, and that is .

VOA: standard.2009.11.03

The court granted her temporary custody of the children - two boys and a girl who range from 7 to 12 years old and set dates in July and August to take up the other questions.

VOA: standard.2009.06.29