Michelle Obama said the main goal of the garden is to educate children and influence communities to choose and prepare healthful food.

VOA: special.2009.03.31

Here you see the main concern is what's happening with blood sugar when people eat food.

它主要关注的问题是进食引起的血糖变化

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 that would suggest that education is probably not going to get the job done, because that's not the main driving reason because most people know that they shouldn't eat so much junk food, but education is what we default to when we think about what to do.

所以你们可能认为,教育并不能解决这个问题,因为这不是主要原因,大部分人都知道不该吃那么多垃圾食品,教育是思考解决方法时被忽略了的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Lack of rainfall is one of their main causes of food shortages.

VOA: special.2010.01.11

"The main concern,number one, everybody had more than anything, buy number,was food and water;

VOA: standard.2010.01.30

Its main goal is to use agriculture-based development to end hunger,reduce poverty and food insecurity,as well as increase opportunities for Africa to become a food exporter.

VOA: standard.2009.10.20

A suicide bomber blew himself up inside the main office of the United Nations World Food Program in Islamabad last week, killing five employees of the agency.

VOA: standard.2009.10.11