Coal from the Powder River Basin of Montana and Wyoming tends to be low in sulfur, for example, allowing power plants to burn more without exceeding local pollution limits.
来自蒙大拿粉河盆地和怀俄明州的煤炭含硫量低，可保证发电厂不超出本地排污限制。
Powder River Pass cut through them.
波德河隘口穿山而过。
Powder River Pass cut through them.
波德河隘口穿山而过。
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