Back 【解題】10 個一數,從 100 向下數到 60 相關課程 0 / 750 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. 【解題】10 個一數,從 100 向下數到 60 上傳學習單 下載學習單