But there is an environmental cost. Shanghai residents now use two and a half times more power per head than their rural cousins.
但上海的辉煌背后存在着环境代价。上海居民使用的电力是郊区居民的2.5倍。
The city's seemingly insatiable energy demands currently require the output of 17 power stations.
这个城市近乎贪得无厌的能源需求需要17个电厂来供应需求。
South of Shanghai the city lights gradually fade as we enter an ancient world.
上海往南，城市灯光逐渐暗淡好象我们进入了一个古老的世界。

注：视频如无法播放，请刷新

重点讲解：

1. more than

更多；较多；

eg.It's a good idea to give adolescents a little more information than they ask for.

青少年提了问题，不妨在回答后再给点儿额外信息。

eg. It will produce electricity more cheaply than a nuclear plant.

它的发电成本要比核电站低。

2. south of

位于…以南；在…南边；

eg. They now own and operate a farm 50 miles south of Rochester.

他们现在拥有并经营着一家位于罗切斯特以南 50 英里处的农场。

eg. I was living in a house just south of Market Street.

我就住在市场街南边的一座房子里。