“In the college population, it may be difficult to sort out recreational drinking from true problem drinking with DSM-IV diagnostic criteria alone, ” the researchers said.

研究者说：在大学人群中，区分娱乐喝酒的人和真正的美国精神障碍下统计手册上描写的标准的酗酒的人或许是有点困难的。

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“In the college population, it may be difficult to sort out recreational drinking from true problem drinking with DSM-IV diagnostic criteria alone,” the researchers said.

研究者说：在大学人群中，区分娱乐喝酒的人和真正的美国精神障碍下统计手册上描写的标准的酗酒的人或许是有点困难的。

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Among the several criteria is finding 1m signatories (0.2% of the EU population) from a quarter of member countries.

准则之一是从1/4的成员国中收集100万个（占0.2％欧盟人口）签名。

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Experts estimate that as much as 2% of the population meets the criteria, a group that spans all education and income levels.

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The criteria considered include population density, the distance to underground geological formations suitable for carbon sequestration, seismic activity, terrain, proximity to airports, military bases and so on and so forth.

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Regional Trends 1998 compares 13 different regions of the UK in hundreds of criteria, ranging from population and wealth to drug use and charitable spending.

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