求翻译：城市建设用地扩张是中国城市化进程加快，社会经济建设发展的必然要求，它为城市建设提供了土地保障。但是它占用过多优势耕地，威胁粮食生产安全，因而需要对其进行研究。是什么意思？

The urban construction land expansion of China's urbanization process accelerated, and the inevitable requirement of the socio-economic construction and development of urban construction land protection. But it does take up too much advantage of arable land, threatening food production safety, and t

City building expansion is used to speed up the process of urbanization, social and economic development and building of the necessary requirements, it is a city-building providing the land protection. But it takes up too much land, Advantage security threat to food production, and the need to study

The urban construction uses the expansion is the Chinese urbanization advancement speeds up, the social economy construction development inevitably request, it has provided the land safeguard for the urban construction.But it takes the excessively many superiority farming, the threat grain productio

Urban construction land expansion is accelerating the process of urbanization in China, inevitable requirements of socio-economic development, urban construction land protection. But it's taking too much advantage of cultivated land, threatening food security and so need to study it.

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