Chrome，
QQ浏览器
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![全199集【四年级数学上册/下册趣味动画]把抽象公式、复杂应用题变成生动剧情，孩子看得懂、记得牢，轻松爱上数学！ 家长们别错过，助力孩子打好数学基础](//imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2Fa8a771b12611afb0c1de4a01433ab79219c7f9f1.jpg%40672w_378h_1c_%21web-search-common-cover)
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播放：18 时间：2024-06-19简介： -
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![[全294集]2025暑假必看【北师大版四年级数学上册/下册数学]四年级上册数学课本同 步+专项培优精讲课堂视频配套讲义习题PDF](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F5479205812b404b45dcd828c07867aa285c89ece.jpg%40672w_378h_1c_%21web-search-common-cover)
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播放：12 时间：2024-06-19简介： -
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![全199集【四年级数学上册/下册趣味动画]把抽象公式、复杂应用题变成生动剧情，孩子看得懂、记得牢，轻松爱上数学！ 家长们别错过，助力孩子打好数学基础](http://imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2Fa8a771b12611afb0c1de4a01433ab79219c7f9f1.jpg%40672w_378h_1c_%21web-search-common-cover)
![[全294集]2025暑假必看【北师大版四年级数学上册/下册数学]四年级上册数学课本同 步+专项培优精讲课堂视频配套讲义习题PDF](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F5479205812b404b45dcd828c07867aa285c89ece.jpg%40672w_378h_1c_%21web-search-common-cover)
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