美国城市空气污染在过去的十年里下降了22%, 这是由于严格的规则, 更多的EVs, 以及清洁能源。 U.S. city air pollution fell 22% over the past decade due to stricter rules, more EVs, and clean energy.

今天发表的一份新的联邦研究报告显示,在过去十年中,美国主要城市的空气污染水平大幅下降,颗粒物浓度平均下降22%。 A new federal study released today reveals that air pollution levels in major U.S. cities have dropped significantly over the past decade, with particulate matter concentrations falling by an average of 22%. 环境保护局汇编的数据将排放量下降归因于更严格的排放条例、更多地使用电动车辆以及清洁能源技术的进步。 The data, compiled by the Environmental Protection Agency, attributes the decline to stricter emissions regulations, increased use of electric vehicles, and advancements in clean energy technology. 报告还指出,在工业活动和农业做法导致污染水平升高的农村地区,挑战依然存在。 The report also notes continued challenges in rural areas where industrial activity and agricultural practices contribute to higher pollution levels.