載入中... 相關課程 Back in fact: 事實上, actually, as a matter of fact 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. in fact: 事實上, actually, as a matter of fact 上傳學習單 下載學習單