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      <title>1.1.1集合及其表示方法+第2课时</title>
      <link>https://math123.net/thread-49-1-1.html</link>
      <description><![CDATA[[Dplayer]https://www.math123.net/lessons/b1112/index.m3u8[/Dplayer]]]></description>
      <category>『 必修部分 』</category>
      <author>WGq23</author>
      <pubDate>Mon, 06 May 2024 14:02:20 +0000</pubDate>
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      <title>1.1.1集合及其表示方法+第1课时</title>
      <link>https://math123.net/thread-48-1-1.html</link>
      <description><![CDATA[[Dplayer]https://www.math123.net/lessons/b1111/index.m3u8[/Dplayer]]]></description>
      <category>『 必修部分 』</category>
      <author>WGq23</author>
      <pubDate>Mon, 06 May 2024 13:49:53 +0000</pubDate>
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      <title>开讲之前</title>
      <link>https://math123.net/thread-46-1-1.html</link>
      <description><![CDATA[[Dplayer]https://www.math123.net/lessons/0/index.m3u8[/Dplayer]]]></description>
      <category>『 必修部分 』</category>
      <author>WGq23</author>
      <pubDate>Wed, 01 May 2024 17:09:11 +0000</pubDate>
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      <title>大家对视频讲解有不明白的欢迎发帖提问</title>
      <link>https://math123.net/thread-20-1-1.html</link>
      <description><![CDATA[礼貌发言，回复才会及时]]></description>
      <category>『 必修部分 』</category>
      <author>WGq23</author>
      <pubDate>Mon, 08 Apr 2024 16:28:27 +0000</pubDate>
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