Twenty-one nations around the world recently joined forces to better understand and prevent greenhouse gas emissions from farms.

VOA: special.2010.01.05

So, we have to choose foods, we have to navigate around the world, we have to recognize objects, we have to be able to understand physical interactions.

所以我们要选择食物，要寻找方向，要认识物件，要能够理解物理相互作用。

耶鲁公开课 - 心理学导论课程节选

An American nonprofit organization helps young people around the world to understand important issues, and each other.

VOA: special.2009.11.12