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单词 dot-hole
释义

> as lemmas

dot-hole
dot-hole n. Mining (Obsolete rare) a column of ore running into the rock, esp. one having soft material (e.g. clay) at its centre; = sense A. 7.
ΚΠ
1747 W. Hooson Miners Dict. Dots, and Dot-Holes, round holes of Ore, runing into the hard Stone, especially in Pipes, much like those called Blanches.
extracted from dotn.1prep.
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