求翻译：　　大众化是网络经济和电子商务发展的必然要求。如我国每年流动进城的暂住人口有4000万，其中许多人要租房，房屋租赁市场巨大。是什么意思？

　　Popular is a necessary requirement for the development of network economy and e-commerce. If pulmonary flow into town every year in China has 40 million, many of these people to rent, leasing market is huge.