1·Before electric lights, people could often see about 2,500 different stars.
在电灯出现之前，人们通常可以看到大约2500颗不同的星星。
2·Electric lights have replaced candles.
电灯已经取代了蜡烛。
3·Then electric lights weren't invented.
当时电灯还没有发明。
4·Electric lights weren't invented then.
那时电灯还没有被发明。
5·The room was lighted with electric lights.
房间用电灯照明。
6·Electric lights are an improvement over candles.
电灯与蜡烛相比，是一个进步。
7·Electric lights lit up the basket - ball ground.
电灯把篮球场照得亮堂堂的。
8·We use small electric lights and other decorations.
我们使用小电灯和其他装饰品。
9·A world without electric lights. Without electricity.
一个没有电灯的世界。没有电的世界。
10·They still live in the houses without electric lights.
他们仍然住在没有电灯的房子里。