清洁: cleaning; clean空气: air; atmosphere政策: policy中心: centre; centrum; centrality; ...清洁空气: clean air; makeuair清洁空气法: clean air act清洁空气倡议: clean air initiative清洁空气的罐: clean air package清洁空气法案: the clean air act清洁空气;新鲜空气: clean air国际政策中心: center of international policy; cip欧洲清洁空气方案: clean air for europe清洁空气的代价: cost of clean air; costs of clean air清洁空气法修正案: clean air act amendment美国全国政策中心: center for national policy of the u.s.a生殖法和政策中心: center for reproductive law and policy全国保护清洁空气联盟: national clean air coalition国家法律与政策中心: nlpc日内瓦安全政策中心: geneva centre for security policy景气政策: policy for industrial fluctuations澳大利亚和新西兰清洁空气学会: clean air society of australia and new zealand纯洁空气: clean air; pure air刺激景气政策: reflationary policy天然气政策法: natural gas policy act决策中心: decision center; decision centre