It has become more and more powerful, 它的影响力越来越大

302. One of the greatest changes in recent times
     近年来 最大的变化之一
303. has come from a single invention made less than 140 years ago.
     是由一项历史还不到一百四十年的发明引起的
304. Electric light.
     电灯
305. It has become more and more powerful,
     它的影响力越来越大
306. filling our streets with light.
     点亮了我们的街道
307. It's everywhere in the city.
     城市灯光无处不在
308. It even goes under ground.
     甚至延伸到地下

来自《行星地球 第二季 第六集 Planet Earth S02E06 城市》第 305 行