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引子:灯火和黑暗在进入这个题目之前,我先讲我的一个经验。上次,我到台湾玩,完了上飞机走,飞机飞起来,很快升高,从窗子里俯瞰出去,是万家灯火的样子。灯火密密麻麻地,一直连到了地平线上。当时给我一种感觉,好像城市文明已经征服了自然。飞机再往前飞,飞出了城市上空,就是一片黑暗。然后就什么也看不见了。如果做一个全球性的俯瞰,在这个星球上,恐怕城市文明依然是在黑暗的包围中的。
Intro: Lights and Dark Before entering this topic, let me talk about one of my experiences. Last time I went to Taiwan to play and finished on the plane. The plane flew and quickly rose. It looked out of the window and looked like a light. Lightly and densely, has been connected to the horizon. At that time gave me a feeling, like urban civilization has conquered nature. The plane then flew forward, flying over the city, is a dark. Then I can not see anything. If you make a global view, on this planet, I am afraid that urban civilization is still surrounded by darkness.