The paper strives to neaten a clear clue of this field for future study.

文章着力在该领域整理出一条清晰的线索供将来研究之用。

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If you have a paper jam make sure you clear the jammed paper properly.

如果卡纸，你要确定适当地将卡纸清除。

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If you have a paper jam make sure you clear the jammed paper properly.

如果卡纸，你要确定适当地将卡纸清除。

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