| 释义 |
shale oilnoun [mass noun]Oil obtained from bituminous shale.Two important alternatives to current oil reserves are shale oil and tar sands....- Additionally, as Bartlett notes, unconventional fossil fuels, such as heavy oil, tar sands, shale oil, represent an even larger resource.
- The targets are oil, coal, shale oil, and, if you believe the oil industry's press releases, the largest trove of natural gas on the continent.
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