Contrast to conventional hot mix asphalt, the production of warm mix asphalt can save fuel, reduce waste gas emission and thus it is recognized as green material.

相对于常规热拌沥青混合料，乳化沥青温拌混合料能节约能源、降低排放，是一种绿色路面材料。

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Different bottlers of fuel propane use different odourants and so do green gas bottlers hence the different smells.

不同的燃料丙烷使用的 刺激性 气体的添加剂都不同，所以绿 气的味道也许是不同的。

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The switch to Sunoco Green E15, the official fuel of NASCAR and a renewable, low-carbon power source, reduced greenhouse gas emissions by 20% compared with unleaded gas.

FORBES: NASCAR Green Is Really Purple

Dubbed by the president as the bridge fuel until green energy can get its legs, Central Appalachia is rife with both the unconventional gas, and voters.

FORBES: Coal Country Losing Luster