He says parents should limit snacks to one a day for children age six and older.

VOA: special.2010.03.17

But so, too, there's obviously an age limit.

当然,显然还有年龄限制

耶鲁公开课 - 古希腊历史简介课程节选

But so, too, there's obviously an age limit.

当然,显然还有年龄限制

耶鲁公开课 - 古希腊历史简介课程节选