" What are the cables connected to? " asked Benny.

“那电缆连接着什么？”Benny 问到。

The cable connected the television to the wall socket.

电缆：将电视连接到墙上插座的电缆。

A huge network of underground cables connected every box in the city to the central alarm center.

一个巨大的地下电缆网络将城市中的每个盒子连接到中央报警中心。

In 1882, on Pearl Street in New York City, Thomas Edison opened the world`s first commercial electric grid, lighting up local homes and businesses with cables connected to his power station.

1882年的纽约市珍珠街, 托马斯·爱迪生开放了世界上第一家商业电网, 通过连接到他发电站的电缆照亮了挨家挨户及当地的企业。

Make sure means check - make sure that this is happening, in this case that it's hooked up to a phone line, meaning there is a phone cable connected to the machine.

Make sure 表示检查 - 确保这种情况正在发生，在这种情况下， 它已连接到电话线上， 这意味着有一条电话线连接到机器。