The urban traffic jam problem has already become one of the greatest problems that the modern society, especially urban society is facing.

城市交通拥挤问题已经成为现代社会尤其是城市社会面临的最大课题之一。

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No one will be shocked to hear that the dean of Harvard business School believes that business is the world's greatest generator of prosperity and solver of problems.

当听到HBS院长认为商业是这个世界上最伟大的繁荣制造器和问题解决者，没人会大惊小怪。

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Channel cutoff of the lower reaches of the Yellow River constitutes one of the greatest environmental problems in China.

黄河下游断流是我国最大的环境问题之一。

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One of the greatest problems for anyone who has dealings with government, whether as a citizen or a business, is its sheer complexity.

ECONOMIST: A survey of government and the Internet

Yet the Rev Dr Gordon Gatward, who runs the Arthur Rank Centre, says one of the greatest problems has been persuading foot and mouth-stricken farmers to come forward and apply for help - partly out of pride, partly out of reluctance to be seen to pander to the popular prejudice that farmers are always looking for handouts.

BBC: Jubilee tour diary: Beer in Burton