shale
shale 英 [ʃeɪl] 美 [ʃel]
n. [岩] 页岩；泥板岩
名词复数:shales
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- n. [岩] 页岩；泥板岩
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1. We can extract oil from shale.
我们可以从页岩中提取石油。
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2. 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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3. "shale gas, " he says.
他说：“就是页岩气。
- shale (n.) 1747, possibly a specialized use of Middle English schale "shell, husk, pod" (late 14c.), also "fish scale," from Old English scealu (see shell (n.)) in its base sense of "thing that divides or separate," in reference to the way the rock breaks apart in layers. Compare Middle English sheel "to shell, to take off the outer husk" (late 15c.). Geological use also possibly influenced by German Schalstein "laminated limestone," and Schalgebirge "layer of stone in stratified rock."
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