counter
问题描述：
counter
例句是：
1、They provide much-needed natural corridors in urban settings,mitigating the loss of “natural” space,and constituting the essential counter form to the built environment.
2、Lynch (1981),in discussing models of city form,saw open-space systems as the necessary,essential counter form to the built environment,while Gosling and Maitland(1984) concluded that circulation and open-space systems were the basic organizing structures of any development.
答
counter form(相反的形式）