糟糕的照明设计使人造光向外向上照射到天空。
Bad lighting design allows artificial light to shine outward and upward into the sky.
大多数城市现在所使用的户外照明，不仅远远超过所需的亮度，还照射到不需照明的区域。
Most cities in the world today use outdoor lighting that is not only far too bright, but also directed to places where it is not needed.
将一节竹子劈去一半就成了风叶，把竹子的末端做成向下的倾角，这样灯光就能向下照射为路人照明，也能从远处看到。
The windblades come to existence by cutting the bamboos into halves. The ends of the bamboos are cut angularly so the lamp lights downwards to the passer-bys and its motion can be seen from afar.
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