載入中... 相關課程 Back How Earth's Tilt Causes Seasons 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. How Earth's Tilt Causes Seasons : How being Earth's tilt causes seasons 上傳學習單 下載學習單