But as women's roles changed, marriage became more about companionship, according to research by two University of Michigan economists, Betsey Stevenson and Justin Wolfers.

但根据密歇根大学的两位经济学家史蒂芬·贝森和贾斯汀·沃尔弗斯的研究，随着女性角色的转变，婚姻变得更像一种伙伴关系。

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That was the question which a team of researchers led by Jim Stevenson of the University of Southampton, in Britain, set out to answer.

针对这个问题，英国南安普顿学院的吉姆?斯蒂文森所带领的研究小组开始着手寻找答案。

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That was the question which a team of researchers led by Jim Stevenson of the University of Southampton, in Britain, set out to answer.

针对这个问题，英国南安普顿学院的吉姆?斯蒂文森所带领的研究小组开始着手寻找答案。

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