求翻译：在我国居民日常生活中占有较大比重。这也是生鲜供应链的主要物流和研究对象。它是超市中最重要同时也是经营难度最大的一类商品。是什么意思？

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In our daily lives of the inhabitants have a larger weight. It is also fresh supply chain logistics and the main object of study. It is a time-out in the city's most important and also the most difficult type of merchandise.

Holds the great proportion in our country inhabitant daily life.This also is lives supplies the chain fresh the main physical distribution and the object of study.It is in the supermarket most is important simultaneously also manages the difficulty biggest first-rate commodity.

China occupies a larger proportion of residents ' daily lives. It is also a major fresh food supply chain logistics and research objects. It is the most important supermarket is also undertaking the most difficult kind of merchandise.

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