載入中... 相關課程 Back 人體的減數分裂 精子卵子的產生 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. 人體的減數分裂 精子卵子的產生 上傳學習單 下載學習單