城市开敞空间是指城市边界内的非建筑用地空间，主体是绿地系统。
What the open space of city meant inbounds by the city is not the building site space, the subject is a green land system.
城市开敞空间是指城市边界内的非建筑用地空间，主体是绿地系统。
What the open space of city meant inbounds by the city is not the building site space, the subject is a green land system.
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