a tv set

• With a tv set at home , people not only hear the voices and music , but they can actually see what is going on at the very moment it is happening far distances away
  家里有一台电视机，不仅可使人们听到讲话和音乐，还可以看到很遥远的地方正在发生的事情。
• State media has previously quoted officials as saying the radiation emitted would be no higher than normal background radiation such as from a tv set , and would not harm residents living near the track
  官方媒体之前表示其辐射不会高于一些普通的背景辐射，如电视机等，而且不会对沿线居民的健康造成伤害。