載入中... 相關課程 Back N-7-3-S04_能理解-a雖然有負號在前,但是-a也可能是正數。 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. N-7-3-S04_能理解-a雖然有負號在前,但是-a也可能是正數。 上傳學習單 下載學習單