The study found the longest-lasting marriages involve a man who walked down the aisle at the age of 31 -two years and three months older than their partner.

调查发现，从最稳定的婚姻看，男人最好31岁结婚，比妻子大两岁零三个月。

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The study found the longest-lasting marriages involve a man who walked down the aisle at the age of 31 - two years and three months older than their partner.

调查发现，从最稳定的婚姻看，男人最好31岁结婚，比妻子大两岁零三个月。

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After 18 months - and two years after the beginning of the study - all of the volunteers returned to the lab to repeat their measurements from the start.

在18个月，也就是研究开始两年后，所有志愿者都回到实验室，重新读出他们一开始的体重。

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