載入中... 相關課程 Back 分子與分母 (英) 登入觀看 ⇐ Use this menu to view and help create subtitles for this video in many different languages. You'll probably want to hide YouTube's captions if using these subtitles. 分子與分母 (英) : 介紹分數的分子與分母 上傳學習單 下載學習單