觀看人次：
1056
我們地球上所有的生命全都依賴於水文循環。它千變萬化﹑行雲流水，能轉化成雲﹑雨﹑ 雪﹑河流或海洋，並在每個地方創造出多樣的地形景觀和令人驚訝的生態系統。
#水 #自然生態
分級:
片長:
發音:
發行:
導演:
分級: 普遍級
片長: 25 min
發音: 華語
發行: 2006-12
導演: 大麥影像傳播工作室
片長: 21 min
發行: 2008-12
導演: BBC
片長: 46 min
發行: 2007-03
導演: 三立電視
片長: 24 min
片長: 47 min
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