相关试题
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The amount of garbage in our water has become alarming.
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p meet our energy needs．This method could also reduce the amount if garbage piling up on the earth．
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p meet our energy needs．This method could also reduce the amount if garbage piling up on the earth．
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our energy needs．This method could also reduce the amount if garbage piling up on the earth． The
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p meet our energy needs．This method could also reduce the amount if garbage piling up on the earth．