Most of the creatures here move up or down the slopes with the seasons 这里的大部分动物 都随着季节变化上下迁移

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most seasons or move here slopes up with down of creatures the
  1. Its food, bamboo, on which it totally relies
    它完全依赖竹子为生
  2. has so little nutritional value
    但是竹叶没有太多营养价值
  3. that it can't build up a store of fat like other bears.
    所以它无法像别的熊那样积累起脂肪
  4. Most of the creatures here move up or down the slopes with the seasons
    这里的大部分动物 都随着季节变化上下迁移
  5. but the panda is held captive by its diet
    只有大熊猫因为食物始终逗留此地
  6. for the kind of bamboo it eats only grows at this altitude.
    它吃的这种竹子只生长在这一海拔地区
  7. But these forests hold fewer challenges for the more mobile.
    不过这些森林对于更灵活的动物来说 却没有什么挑战性

来自《行星地球 第一季 第二集 Planet Earth S01E02 山地》第 239 行

Walden21
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