纽约英语口语网新版
广播电视英语短句
第 252 课:情感表达-7

Brown outs happen when there is too much demand for electricity. 当电量需求过多时,就会产生电压不足。

The electric system is unable to offer all the power needed in an area. 在一个地区中,电力系统是不能够提供所有的用电需求的。

Black outs were common during World War Two. 在第二次世界大战期间,电压不足问题常有发生。

Officials would order all lights in a city turned off to make it difficult for enemy planes to find a target in the dark of night. 为了使敌机在黑夜中不容易知道到目标,军官们会命令士兵将城市中所有的灯都关上。