求翻译：（三）改革现行房地产开发经营体制，推行合作建房等多种开发体制，实现城市房屋供给主体多元化，大幅度增加房屋供给。是什么意思？

(C) The reform of the current real estate development and management system, the implementation of cooperative housing development system, the urban housing supply diversification, a significant increase in housing supply.

(3) reform of the current real estate development, operating system, such as the cooperative housing more than one development system to achieve urban housing supply diversification, increased supply of housing.

正在翻译，请等待...

(C) reform the real estate development and management systems, to carry out joint house-building and other development institutions, implementation of urban housing supply diversification, substantial increase in housing supply.

(3) reform present property development management system, the carrying out cooperation constructs housing and so on many kinds of development system, realizes the civic building supplies main body multiplication, increases the house supplies large scale.