• 开采花费低廉,主要成本在于市场的运费。

    It does not cost much to scrape it up; the expense comes in moving it from mine to market.

    youdao

  • 开采花费低廉,主要成本在于市场的运费。

    It does not cost much to scrape it up; the expense comes in moving it from mine to market.

    youdao

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