There is inevitability for the long existence of non-governmental credit loans.
民间借贷之所以能够长期存在，有其存在的必然性。
A: According to my knowledge, there are many non-governmental security service companies in Beijing.
答：据我所知，在北京目前有很多民间保安公司。
A: According to my knowledge, there are many non-governmental security service companies in Beijing.
答：据我所知，在北京目前有很多民间保安公司。
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