1·This second definition is particularly important now because quality of life can only be realised collectively – for example, by living in unpolluted environments and safe communities.
后一个定义尤其重要，因为生活品质只能集体实现——例如，生活在未受污染的环境和安全的社区里。
2·Every American deserves the cleanest air, the safest water, and unpolluted land, and each person can take steps to protect those precious resources.
每一个美国人都应享有最清新的空气、最安全的饮水和未受污染的土地，而且每个人都可以采取措施保护这些宝贵的资源。
3·I need my daughters, and my daughters' children and their children to enjoy clean fresh air, unpolluted seas, blue skies and abundant sunshine wherever they live.
我需要我的女儿，和我女儿的孩子和他们的子女都能享受清新的空气，未受污染的海水，蓝色的天空和充足的日照，无论他们生活在哪里。