为改善大气质量，就必须降低成品汽油的硫含量。
For making the atmosphere quality better, sulfur content of gasoline product must be reduced.
建筑南立面开大面积窗户对减少建筑能耗、节约能源、改善大气质量具有重要意义。
The southern single glass window with large area of the building is greatly meaningful for energy reduction in building, energy saving, and environmental improvement.
生物质与煤混合燃烧技术是一种洁净燃烧技术，可以有效地减轻环境污染，改善大气质量。
It is a kind of clean coal combustion technology for biomass combined with coal to be burned, which can effectively reduce environmental pollution, improve air quality.
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