And while the average American paycheck had risen over the past 30 years,its happiness-boosting benefits were more than offset by a drop in the quality of relationships over the period.
And while the average American paycheck had risen over the past 30 years,its happiness-boosting benefits were more than offset by a drop in the quality of relationships over the period.
然而在过去的30年里，美国平均收入已经有所增长，这一时期里面由于快乐升级带来的利益要多于由于关系水平导致的收入下降来。