Our genetics cannot change this quickly in order to explain the increase in incidence."

VOA: standard.2010.08.09

And the answer is that-- yes it won't make a difference to our wellbeing but it also doesn't mean that we cannot increase our level of wellbeing.

答案是-,是的，它不会改变我们的幸福水平,但并不意味着,我们不能提升自己的幸福水平。

哈佛公开课 - 幸福课课程节选

Paul Anastas of the US Environmental Protection Agency argues that improvements in diagnosing autism cannot be solely responsible for the dramatic increase in autism cases reported worldwide.

VOA: standard.2010.08.09

Nothing is free. So,the reason I make that point is, you cannot ask local elected officials to raise teacher salaries and cut taxes and balance the budget and increase roads.

VOA: standard.2009.03.20