Linda Waite of the University of Chicago has found that a married older man with heart disease can expect to live nearly four years longer than an unmarried man with a healthy heart.
芝加哥大学的琳达·怀特发现，患有心脏病的已婚老年男性比心脏健康的未婚男性的寿命要长将近四年。
Comparing an unmarried man with his married identical twin takes genetics out of the equation and makes it more likely that you're uncovering environmental effects.
通过将未婚的男性跟他们的已婚双胞胎手足进行比较，能够将基因问题排除，并且使你更可能揭示环境的影响。
Her father was an old unmarried professor of mathematics, a brutal man and a braggart, who went out to give lessons in spite of his age.
她的父亲是个性情粗暴、爱吹牛的老数学教师，从没正式结过婚，虽然上了年纪，却还靠替人补课度日。
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