美国空气最清新的城市

Great Falls, Mont.
Population: 82,178
蒙大拿州大瀑布城
人口：8 2178

It’s a good thing that the small and relatively remote city of Great Falls enjoys clean air, given how much time its residents probably spend outdoors taking advantage of the area’s natural beauty.
好事就是这个小，相对遥远的大瀑布城拥有清新的空气，给居民们充足时间充分利用这个地区的自然美景，进行户外活动。

The city continues to work hard to maintain that quality standard, recently fending off a major coal-fired power-plant project.
这个城市继续努力保持这种空气质量标准，最近还反对一个重要的煤矿发电厂的计划。