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Substance exists in time and space.
物质存在于时间和空间。
youdao
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Due to limitations on space, many topics of actual substance have been left out.
因篇幅所限，有很多实质性的课题都被省略了。
youdao
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Due to limitations on space, many topics of actual substance have been left out.
因篇幅所限，有很多实质性的课题都被省略了。
youdao