• Hydrogen sulfide leaks, methane explosions, mine-stope collapses, oh my! Coal mining is an ancient profession, and has been recognized as wildly risky since the very start.

    硫化氢泄露甲烷爆炸煤矿坍塌,呢,太危险了!煤矿开采一种古老职业,有史以来,就一直认为是风险极高的职业。

    youdao

  • Hydrogen sulfide leaks, methane explosions, mine-stope collapses, oh my! Coal mining is an ancient profession, and has been recognized as wildly risky since the very start.

    硫化氢泄露甲烷爆炸煤矿坍塌,呢,太危险了!煤矿开采一种古老职业,有史以来,就一直认为是风险极高的职业。

    youdao

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