載入中... 相關課程 Back 3的-2次方是多少?指數為負的做法 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. 3的-2次方是多少?指數為負的做法 上傳學習單 下載學習單