美国各地的城市都在治理空气污染，做法是控制汽车废气排放、限制使用薪柴炉和监测工厂污染。
Cities across the U. S. are cracking down on air pollution by enforcing auto emissions control, limiting the use of wood burning stoves, and by monitoring factory pollution.
将具有负离子功能的材料嫁接于竹、木地板专用UV漆这个载体上，使其与竹、木地板结合后具备治理空气污染、提高空气品质之功效。
By combining anion material with UV paint, the flooring is expected to equipped with air purification function and hence it could improve the interior air quality.
北京的道路交通、空气污染、城市环境正在加紧治理，每天在展示着新的面貌。
Beijing's road traffic, air pollution, urban environment is stepping up efforts to governance, a new display every day in the face.
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