They say exposure at levels common among children in the United States may increase the chances that a child will be diagnosed with A.D.H.D.

VOA: special.2010.05.26

you'd look around ten to fifteen thousand pounds a year, per child.

你需要准备一万到一万五英镑一年，这只是一个小孩的学费。

英国的教育 - SpeakingMax英语口语达人