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单词 open pit
释义
open pit
Word forms: open pits
countable noun
An open pit is a mine where the coal, metal, or minerals are near the surface and underground passages are not needed. [US]
It is an open pit, which keeps costs low relative to underground operations.
regional note:   in BRIT, use opencast mine
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更新时间:2024/12/23 20:06:14