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英语
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Coal is one of Ohio’s most valuable mineral resources and the nation’s most abundant fossil fuel.
人气：224 ℃ 时间：2020-02-02 22:45:03
解答
煤炭是俄亥俄州最具价值的矿产资源之一,同时也是美国储量最丰富的化石资源.
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