It will take years and billions of dollars to improve China's refineries to make higher-quality, cleaner-burning gas.

要对中国的炼油厂进行改造、从而生产更高质量的清洁汽油需要用数年时间，花费数十亿美元资金。

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On the individual level ... on certain days in winter when the air-quality index is over 150, we prohibit residential wood-burning.

冬季当空气质量指数超过一百五十的那几天，我们禁止居民燃烧木材。

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The experiment indicates that better stability and quality can be obtained through the new neural networks model in the huge coal-burning boiler heating system.

试验结果表明，对大型燃煤锅炉供热系统，文章提出的方法可以较好地提高供热系统的稳定性和供热质量。

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This huge abundance of natural gas is a blessing for Texas in the power generation sector, as electric providers look for alternatives as increasingly strict EPA air quality regulations make it more and more difficult to generate electricity by burning coal.

FORBES: The Blessing That is the Eagle Ford Shale

Most accommodations are in highly individualized and carefully decorated freestanding cottages, decorated with original museum quality art and featuring king-size feather beds and sitting areas with wood-burning fireplaces and screened porches.

FORBES: Twin Farms, Barnard, VT