US coal prices have jumped to their highest level in more than 12 years as the industry scrambles to keep pace with surging demand driven by power producers switching to the heavily polluting fossil fuel.
美国煤炭价格已跃升至12年多来的最高水平。随着发电企业转向这种污染严重的化石燃料，推动煤炭需求飙升，煤炭行业正努力跟上需求的步伐。
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