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来源：雅诚德英语网
The methane build-up from newly liberated gas is deadly as witnessed in the Massey Energy Big Bend mine recently.
最近在Massey EnergyBigBend矿山中见证了从新释放的天然气中积聚的甲烷是致命的。
The methane build-up from newly liberated gas is deadly as witnessed in the Massey Energy Big Bend mine recently.
最近在Massey EnergyBigBend矿山中见证了从新释放的天然气中积聚的甲烷是致命的。