求翻译：自制订以来，对中国的人口问题和发展问题的积极作用不可忽视，但计划生育一味的只控制人口数量，忽略世代更替，造成国家严重的老龄化，未富先老的格局。到21世纪初，中国的计划生育政策又做出了一些调整。由于20世纪80年代出生的第一批独生子女已经到达适婚年龄，在许多地区，特别是经济较发达的城市，计划生育政策有一定程度的放松。是什么意思？

Since the formulation has been on China's population problem and the positive role development can not be ignored, but the only family planning, population control, blindly, ignoring the generations change, resulting in a serious state of aging, old before getting rich pattern. The early 21st centur

Since the establishment of China, since the population and development problems cannot be ignored, but the active role of a family only control the size of the population, to the neglect of generational replacement, causing serious aging, have not become rich old pattern of the first-come-first-serv

Since the making, has been noticeable to China's population question and the development question positive role, but birth control constantly only control population quantity, the neglect generation changes, creates the national%

Since its formulation, on China's positive role on population issues and development can not be ignored, but family planning controls only the population, regardless of generation replacement, national severe aging, before it grows rich and old patterns. To the beginning of the 21st century, China's