想象一下持续停电几小时。

Imagine if the power was turned off for hours on end.

youdao

其时，由于经常性的持续停电，尼日利亚的电力系统面临压力。

Nigeria's power system was under pressure with persistent and frequent blackouts the norm.

youdao

而萨那正处于间歇性停电，在过去的几周内，有时一次停电甚至会持续长达2天的时间。

Electricity in Sanaa has been sporadic, sometimes off for as long as two days at a time during the past few weeks.

youdao