- 释义：
- n. 页岩（一种由似泥土细粒的沉淀物层组成的易分裂的岩石）
- 例句：
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We must find economical methods for extracting oil from shale.
我们必须找到从页岩中采油的经济方法.
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We can extract oil from shale.
我们可以从页岩中提取石油.
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More ammonium sulphate solution is being recovered in the process of distilling oil shale.
在提炼油页岩的过程中回收的硫酸铵液比过去多了.
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