事实上，在一些代孕纠纷中，代孕母亲与委托父母之间的关系并非始终稳定。邹露璐提到，部分情况下，代孕母亲可能因情感因素或经济纠纷拒绝让出孩子抚养权，或以身份关系为筹码主张费用。一旦进入诉讼程序，法院往往不会认可所谓“代孕协议”的效力，而是依据分娩事实确认母子关系。
But questions remain about how realistic the goal and timeframe are, given recent and steep Nasa budget cuts, and some scientists are concerned that the plans are driven by geopolitical goals.
。WPS下载最新地址对此有专业解读
Author(s): Zhiyuan Huang, Lidong Ma, Jianbao Zhang, Dongpeng Hua, Qing Zhou, Lei Yang, Ji-Jung Kai, Haifeng Wang。WPS下载最新地址是该领域的重要参考
15+ Premium newsletters from leading experts
Planning to switch fields? Be bold, know your limits and choose your institution wisely, say three UK research leaders.