Rather than concluding that children make parents either happy or miserable, Senior suggests we need to redefine happiness: instead of thinking of it as something that can be measured by moment-to-moment joy, we should consider being happy as a past-tense condition.
与其得出结论说孩子让父母变得幸福或痛苦，Senior 建议我们重新定义幸福：与其将其视为可以由瞬间快乐来衡量的东西，不如将其视为一种过去时的状态。
According to several studies concluding that parents are less happy than childless couples, single parents are the least happy of all.
根据几项研究得出的结论，有孩子的父母比没有孩子的夫妇更不快乐，而单身父母则是其中最不快乐的。
例句取自历年考研英语真题，翻译为机器生成，仅供学习参考。