"We should use all possible sanctions and keep looking for ways to get North Korea to change through international collaboration.

VOA: standard.2010.05.27

Well, we'll sort through all these and discuss what a society might do to help change food preferences and food intake patterns in the society.

我们会通览所有问题然后讨论社会该做些,什么来帮助我们改变饮食偏好和饮食习惯

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So for me, Teach for America is an opportunity to actually align my actions with my thoughts and my hopes and be part of the change we all talk about wanting to see.

为美国而教“对我来说是一个,真正让我实现想法和希望的地方,参与实现我们都想见到的改变。

哈佛公开课 - 幸福课课程节选

Well,as we all know, going to war for regime change is against international law."

VOA: standard.2009.12.13

"We discussed climate change extensively and all of us agreed that it was imperative for us to redouble our efforts in the weeks between now and the Copenhagen meeting to assure that we create a framework for progress in dealing with what is a potential ecologic disaster,"

VOA: standard.2009.11.03