求翻译：从最初的主要依靠不成文法零星制定成文法保护生态环境，发展了到现在的制定大量成文法、建立较完善的法律体系以保护生态环境。是什么意思？

From the first to rely on unwritten and sporadic development of statute law to protect the ecological environment, and development to the development of a large number of statutory law, to establish a better legal system to protect the ecological environment.

From the initial major rely on common law piecemeal statutory protection of the ecological environment and the development of a wide range of the common law, establish a better legal system to protect the ecological environment.

From the initial main dependence unwritten las fragmentary formulation written law protection ecological environment, develops to the present formulation massive written law, the establishment perfect legal framework has protected the ecological environment.

From the initial sporadic developed mainly by unwritten law statutes protect the ecological environment, development has now developed a large number of written law, the establishment of a better legal system to protect the ecological environment.

正在翻译，请等待...