其他如沥青砂及乙醇等生物燃料的能源回报倍数仅有个位数。
The return on sources such as tar sands and biofuels like ethanol are in the single digits.
沥青砂及生物燃料仅占全球能源消耗的一小部分。
Tar sands and biofuels represent only a small part of global energy use.
随着煤油销售获得成功，标准石油在中国的业务又扩展至汽油、沥青及航空燃料的供应。
With the success of kerosene, Standard Oil business in China has extended to gasoline, asphalt and aviation fuel supply.
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