He turned on the light switch. The hall light went on. Then he heard a popping sound because the light bulb blew out. It was time to change the bulb. He went into the kitchen. He opened a kitchen cabinet. He looked at five different light bulbs. One...
背景：一位英国设计师因出色设计出一种低能耗灯泡而获得一项设计大奖。布鲁门灯泡获得了由伦敦设计博物馆颁发的年度设计大赛的大奖。这种灯泡可以省电80%，并且比传统灯泡的寿命长八...
By Mario Ritter Broadcast: November 18, 2003 This is Steve Ember with the VOA Special English Agriculture Report. If you like flowers in the early spring, then the middle of autumn is an important tim...
