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单词 shale
释义
shale (shāl)
n.
A fissile rock composed of layers of claylike, fine-grained sediments.

[Probably from Middle English, shell, from Old English scealu; see skel-1 in the Appendix of Indo-European roots.]

shaley adj.
shale
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更新时间:2025/3/25 23:09:49