求翻译：1949年建国初期中国初步建立了传统的社会保障体系，而在改革开放后中国的社会保障体系得到完善和重构，最后在我国确定社会主义市场经济体制后的90年代逐步走向完善。是什么意思？

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At the beginning of the founding in 1949 China's initial establishment of the traditional social security system, and after the reform and opening China's social security system has been improved and re-structure and, in the end after my socialist market economic system gradually perfected the 1990s

In 1949 early years of the new nation China has initially established the traditional social security system, but China's social security system obtains the consummation and restructuring after the reform and open policy, finally moves towards the consummation gradually after our country determinati

In 1949 China initially established in the early traditions of the social security system, and the perfection of the social security system has been in China since reform and opening up and refactoring, and finally in the establishment of a socialist market economic system gradually perfected after

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