But on the topic of extramarital sex they have become stricter .
但谈及婚外性行为这一话题，他们却变得更为严苛了。
Some more statistics from the original paper " explaining extramarital sex : evidence from urban china " deserve to be cited .
原文“解读婚外性行为：来自中国城市的证据”还有更多的统计数据值得一览。
Prohibitions against extramarital sex that might protect a couple are of little help , as they often apply only to women .
可能起到保护夫妇健康作用的反对婚外性行为的禁令几乎没什么效力，因为那些禁令通常都只适用于女性。
Former u.s. president john f. kennedy covered up his extramarital affairs , and plenty of other politicians have done the same .
美国前总统约翰.f.肯尼迪对于自己的婚外出轨劣迹选择了隐瞒，这样做的还有很多其他政治家。
But pan 's own investigations showed that between 2000 and 2006 , there was a dramatic increase in the numbers of sex partners people had , premarital and extramarital sexual activities .
