求翻译：它在中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and经营难度最大的一类商品。是什么意思？

It occupies a large proportion of the Chinese people's daily lives. This is also the fresh supply chain, logistics and research object. It is the most important in the supermarket and operation difficulty of a class of goods.

It's in the 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 supermarket, and the most important business in the most difficult type of merchandise.

It holds the great proportion in the Chinese 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 the most important and management difficulty biggest first-rate commodity.

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

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