coalmines

  • n.煤矿

复数:coalmines

coalminescoalmines

coalmines

煤矿

英语问题_百度知道 ... ecnomical 经济的 coalmine 煤矿 2、colamine 羟乙胺 ...

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The death toll for producing one million tons of coal in coalmines was 1. 182 persons, down 20. 4 percent.
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