1·We see everything from paved and unpaved roads, light pollution, railways, electricity transmission lines.
我们可以从铺好的柏油路、或是未铺好的道路、光污染、铁路、输电线路看出所有的事情。
2·In a typical electricity transmission line, as much as 10% of the power will be lost over a distance of 800-1, 000km.
用传统的输电线输电，在800 - 1000公里的距离上电能损失为10%。