Some shut down treatment devices when electricity is in short supply. Others turn off their systems at night when they know we are not checking.

有点在电力不够时索性关掉污染处理设备，其他的在夜里我们不检查时关掉。

youdao

Colombia's carbon emissions are relatively low because of plentiful river systems feed enough hydropower generators to supply some 70% of electricity needs.

哥伦比亚的碳排放量相对较低，因为丰富的水系足以保证水能发电机的运转，能满足约70%的电力需求。

youdao

Along with the formation of power market, power systems are required to continuously supply electricity to customers of high quality, minimum cost and low line losses.

随着电力市场的形成，要求电网以最低的成本，向用户连续地提供优质电能。

youdao

For example, the supply of electricity, water and sewage systems are unpredictable and need to be appropriately protected from attack.

ECONOMIST: The conflict over Iraq