奥运圣火在世界屋脊被点燃，多亏了高科技这一历史时刻被捕捉到了。

The Olympic flame was lit at the top of world, and thanks to technology, the historical moment has been captured.

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在世界屋脊上修公路谈何容易，需要翻越多座横断山脉的大山和多条汹涌、刺骨的江河。

Easier said than done on building roads in the roof of the world, more than a dozen mountain range to climb the mountain and a number of rough, biting rivers.

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比如不能择枝而栖，甚至连在草丛安家也成奢望的飞禽，只能在鼠洞里屈就，而其宿费就是在寒冬时节必须衔枝而归，这种鸟鼠同穴的景象只有在世界屋脊才能随处可见。

For instance, the birds who have no tree branches, or even plants, in which to make a nest have to compromise and to take shelter in rat holes, for which they must find some branches in winter time.

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