Back 【解題】5 個一數,快速點數 5 元錢幣的總和 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】5 個一數,快速點數 5 元錢幣的總和 上傳學習單 下載學習單