we ascend into the planet's high mountains 我们会到地球的高山

318. Islands may seem remote and insignificant,
     岛屿可能既偏远而又微不足道
319. but they are home to some of the most precious wildlife on Earth.
     但它们仍是地球上某些珍贵动物的家园
320. Next time,
     下一集
321. we ascend into the planet's high mountains
     我们会到地球的高山
322. to discover a spectacular but hostile word.
     发现一个壮观但充满敌意的世界
323. where life must be at its most resourceful,
     生活在那儿必须足智多谋
324. and only the toughest animals can endure.
     只有生命力最顽强的动物可以忍受
325. [The End]
     [本集结束]

来自《行星地球 第二季 第一集 Planet Earth S02E01 岛屿》第 321 行