載入中... 相關課程 Back lighten: 使輕鬆, 變愉快, light, lighter, 打火機 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. lighten: 使輕鬆, 變愉快, light, lighter, 打火機 上傳學習單 下載學習單