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Watch Later 7:35

概念重溫篇：第20課（5）- 生物之間關係（捕食）

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概念重溫篇：第20課（4）- 物種多樣性及優勢種

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概念重溫篇：第20課（3）- 非生物因子

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概念重溫篇：第20課（2）- 生態系類別

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化學教室-第25章-1-電負性

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化學教室-第24章-2-價層電子對相斥學說(VSEPR)

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化學教室-第24章-1-非八隅體結構的簡單分子物質

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電磁波動-E.g.6

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電磁波動-E.g.3

YU CHUN KEUNG MEMORIAL COLLEGE