power failure的复数形式怎么写？

power failure的音标：power failure的英式发音音标为：['pauə 'feiljə]power failure的美式发音音标为：['paʊɚ 'feljɚ]...

n.电力故障，电源故障，停电...

A power failure plunged the whole house into sudden darkness.停电了,整个房子突然陷入一片漆黑之中.A power failure created an emergency in traffic and transportation.停电使交通运输陷入紧急状况.The hospital has a backup generator in case there is a powe...