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来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/17 18:56:54
英语翻译```````````````英语翻译```````````````英语翻译```````````````出自>前文提到“取其中虚,附地枕之,数里内有人马声,则皆闻之.”兵土用皮革箭袋作枕时“
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出自<<梦溪笔谈>>前文提到“取其中虚,附地枕之,数里内有人马声,则皆闻之.”
兵土用皮革箭袋作枕时“虚能纳声”的空穴效应.