Economist Vincent Chan from Credit Suisse in Hong Kong believes the main problem for the government is to manage expectations of the second generation of migrant workers who form the back bone of China's success.

VOA: standard.2010.06.24

Yeah, this is the main problem.

是，这是主要的问题。

关于罗马尼亚 - SpeakingMax英语口语达人

More fundamentally, I want to get back to what I think of as the main theme of 6.00, which is taking a problem and finding some way to formulate the problem so that we can use computing to help us get an answer.

花一些时间来讲,更重要的是我想，回到我认为的6。00的重点,即处理问题并公式化问题,从而使我们能够靠电脑得出答案。

麻省理工公开课 - 计算机科学及编程导论课程节选

Uganda's main opposition leader this week asked why Uganda and Burundi are providing troops while other African leaders ignore the problem.

VOA: special.2010.07.17