matching (?=.*a)(?=.*b)(?=.*c)def against "defxaxbxcx"
Фото: Denis Balibouse / Reuters
，详情可参考新收录的资料
operated on a stack-backed slice up to the return point.。新收录的资料是该领域的重要参考
[-]LGS11d100I don't expect there's any good data on women under age 25. Your claim that 19 is the best age appears to be based on the one graph of "fecundability", which is not the probability of pregnancy conditioned on trying but the probability of pregnancy conditioned on nothing, i.e. it's confounded by whether the couples want kids. It's from a paper that's been unpublished for 3 years now.