In all versions of the game, roughly 60% of players started out co-operating.However, in the first two, this decreased over time as the pernicious influence of the freeloaders spread.

在游戏的所有版本中，大约60%的组员一开始都会彼此合作，但是，在前两个版本中，当揩油者的恶性影响随着时间扩散的时候，彼此之间的合作减少了。

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In all versions of the game, roughly 60% of players started out co-operating. However, in the first two, this decreased over time as the pernicious influence of the freeloaders spread.

在游戏的所有版本中，大约60%的组员一开始都会彼此合作，但是，在前两个版本中，当揩油者的恶性影响随着时间扩散的时候，彼此之间的合作减少了。

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The pernicious influence of oil, along with other rents such as foreign aid, is easier to measure.

ECONOMIST: Arab democracy

Jilani argues that the money being spent by a host of billionaires and education reform philanthropic organizations is having a pernicious influence on the education reform debate, and is leading toward the privatization of public schools.

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For starters, there are the usual legions are Rupert Murdoch haters who believe the Australian-born media mogul is a pernicious influence on the culture, corrupting politics via Fox News and cheapening once-noble institutions like The Wall Street Journal.

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