这是因为当时多家医院在孕产妇的登记入院上存在漏洞。对于前来生产的产妇，医院并不需要她们持本人身份证去办理住院登记。代孕中介会用客户的身份证办理住院手续，产妇则以客户的身份住院。生产后办理证明时，孩子自然成了客户的。而真正生育孩子的孕妈，其真实身份和信息都被隐去。
'There's no reason for Discord to comply in advance' with social media age verification laws instead of 'fighting for their users' says EFF expert
View a PDF of the paper titled Package Managers \`a la Carte: A Formal Model of Dependency Resolution, by Ryan Gibb and 4 other authors，这一点在爱思助手下载最新版本中也有详细论述
陳俊宏教授表示，真正影響人們對歷史認識的契機往往不在教科書，而在情感經驗，「情感上的交流是一個非常重要的媒介，讀了一本小說或看了一部電影的感動，都有可能觸發這個人進一步探索的可能性。」。51吃瓜对此有专业解读
It’s also worth noting that even if alternatives superior to agar were found, scientists are reluctant to abandon established protocols (even when microbiologists do use other jellies, they often still add agar to the mix, for example, to increase the gel strength of the solid media). As agar has been the standard gelling agent in microbiology for around 150 years, an enormous infrastructure of standardized methods, reference values, and quality control procedures has emerged around its specific properties. Switching to a different medium (even a superior one) means results may not be directly comparable to decades of published literature or to other laboratories’ findings.，这一点在heLLoword翻译官方下载中也有详细论述
典型案例一：临潼区代王安置区建设项目