求翻译：其次，对我国现行的粮食调控政策进行了历史考察，并用灰色、计量等方法进行了分析，得出了各政策的效果与存在问题，从而论证了提高我国粮食安全综合保障宏观政策调控的必要性。根据国情相似原则对美国、欧盟、的粮食调控政策进行了研究，找出了在不同环节上可借鉴不同国家政策的思路。是什么意思？

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Next, has carried on the historical inspection to our country present grain regulation policy, and with methods and so on gray, measurement has carried on the analysis, has obtained various policies effect and the existence question, thus proved enhanced our country food security synthesis safeguard

Secondly, the historical review China's existing food regulatory policy, with gray analyses, measurement methods, and draws policy effects and problems, which demonstrates the increased necessity of integrated protection macro policy regulation of food safety in China. Under similar principles to th

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