To do this, they asked their volunteers to play a social-dilemma game, in which both sides can benefit from co-operating, but only at the risk of being taken advantage of.

实验要求志愿受试者参与一个社交困境博弈游戏，游戏规定如果双方都能选中对方则利益最大，相反，如果一方选中另一方，而另一方并未选中自己，则会有损失的风险。

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Hence someone who's having a good relationship with co-workers is sure to get the benefit here.

因此在这方面，那些和同事有着良好关系的人有明显的优势。

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As Walt Disney Co. rereleases 'Toy Story' and 'Toy Story 2' this weekend in 3-D, other studios will be watching to see if classic titles in their own vaults might benefit from a 3-D makeover.

随着华特-迪士尼公司(Walt Disney Co.)本周末重新发行3D版本的《玩具总动员》(Toy Story)和《玩具总动员2》(Toy Story 2)，其它电影公司也将观望自己库存的经典影片能否从3D播映中获益。

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Families which refuse to co-operate could face benefit sanctions or eviction - but Downing Street says the vast majority want help with their problems.

BBC: Troubleshooters scheme to tackle 'troubled families'

But would Iraqi Arabs really undermine their own prosperity in order to benefit Persian co-religionists?

ECONOMIST: Iraqi oil: Lots of black stuff | The

China has been making substantial efforts on its own to curb such excesses, and these might well benefit from co-operation with outsiders.

ECONOMIST: Some milestone