The development of biofiltration in West Germany, most of which took place in the late 1970s and the 1980s, was brought about by a combination of increasingly stringent regulatory requirements and financial support from federal and state governments.
參考答案:可以这样译:
在西德(联邦德国)主要于70年代后期和80年代发展起来的生物过滤技术,是日益迫切的整顿的呼声和联邦及州政府的金融支持(两种作用)相结合的(附带)产物。
[简析]
1.本句主干: The development was brought about by a combination。
2.combination这里不需一定要翻译出来(结合物),只要说“相结合...”即可,符合汉语习惯。
3.federal and state governments 联邦和州政府。
4.regulatory requirements可译为:(要求)调整的呼声。