The threat of winter frost is not the only reason for trees to shed leaves. 寒冬的威胁不是树木落叶的唯一原因

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threat reason frost shed leaves trees only not for is of winter the to
  1. Great tracts of North America flush red as the season progresses.
    随着季节的变换 北美的大片地域万山红遍,层林尽染
  2. The effect is so spectacular and so extensive
    这种壮观的景象发生的地域之广
  3. that it can be seen from space.
    甚至可以在太空中看到
  4. The threat of winter frost is not the only reason for trees to shed leaves.
    寒冬的威胁不是树木落叶的唯一原因
  5. These forests stand in the tropics.
    这片森林在热带地区
  6. Here day length never changes
    在这里白昼没有变化
  7. but the dry season is so severe that the trees can't afford to loose the amount of water that would evaporate from their broad leaves,
    在炎热干燥的季节 树木无法承受水分从叶子上的大量流失

来自《行星地球 第一季 第十集 Planet Earth S01E10 季节森林》第 231 行

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