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They often understated their coal output.
他们常常少报他们的煤炭产量。
youdao
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The output of coal has doubled.
煤的产量增加了一倍。
youdao
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They want to raise the output of coal.
他们想要提高煤的产量。
youdao
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This coal has a high output of heat.
这种煤产热量高。
youdao
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This coal has a high output of heat.
这种煤产热量高。
youdao