In 10 years, the top cities on the index may be different, but one thing is certain: tomorrow's global cities will be more powerful than ever.

10年后，排名前几位的城市可能会有所不同，但可以肯定的是，未来的环球城市将比以往任何时候都更强大。

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In certain cases, fortified foods and dietary supplements may be useful in providing one or more nutrients that otherwise might be consumed in less than recommended amounts.

在某些情况中，富含营养的食物和饮食补充可能会提供一种或多种人体所需营养，而另一些所需营养的数量无法得到满足。

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Such disclosure may also be associated with certain benefits, however, such as more social support and increased medical attention and access to assistance.

当然，对外披露病情也有可能带来某些好处，比如可以更多地获得来自社会的帮助，可以接受更为细心的治疗及护理。

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"I think the best marriages do that on equal footing across the board even though in certain areas one person may be contributing more than others."

VOA: special.2010.02.19

Many famous performers play modern violins alongside their old masters, not least because they are often more resistant to the rigours of air travel and central heating, but also because they may be more suitable for certain kinds of music.

ECONOMIST: Violin-making

How closely Liverpool and Boston may be linked remains to be seen but the common ownership may cause certain rivalries to become even more entrenched.

BBC: When baseball meets football: Boston and Liverpool

There are certain activities that may be more dangerous than talking on a cell phone.

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