"In these past 60 years, NATO has contributed to an unprecedented period of peace, freedom and prosperity for all its citizens.

VOA: standard.2009.04.04

You've got to make sure that if you explain to others how to do this problem, then somebody else contributes to something else, but you know what everybody contributed in the end.

你得能保证,如果你和别人解释了题目的解法,然后另一个人对别的题目又有独到见解,最后你知道每个人都没有浑水摸鱼

耶鲁公开课 - 基础物理课程节选

If you have profit sharing in a firm or profit sharing in homework assignment, or any joint projects, you have to worry about too little effort being contributed because there's an externality.

如果你是一个公司的股东,或者和别人一起做作业及其他合作项目,你们需要注意到因为外部性,实际上每个人都付出了较少的努力

耶鲁公开课 - 博弈论课程节选

U.S.officials say,in addition to the refueling operation, Japan has contributed $2 billion worth of aid to Afghanistan during the last eight years.

VOA: standard.2009.10.20

Other countries have contributed about 39,000 soldiers, although many are not allowed to engage in combat or serve in violent areas of the country.

VOA: standard.2009.09.03

One of the men who contributed to Phil Jackson reaching his milestone former Chicago Bulls star Michael Jordan was inducted into the Basketball Hall of Fame in 2009.

VOA: standard.2009.12.24

Andrew Cornelio, director of sales and marketing at the Dusit Thani Hotel, said the travel advisories from more than 30 countries also contributed to the dip in tourism.

VOA: standard.2010.03.27

News of the widening trade gap, along with several other gloomy economic reports, contributed to a 2.5 - percent drop in the Dow Jones Industrial Average on Wednesday.

VOA: standard.2010.08.11

(VOICE) Scott Smith is Local historian, "how a pest that really caused so much economic hardship, oddly contributed to great changes in agriculture and to the prosperity of this region."

VOA: standard.2010.08.10