Brown outs happen when there is too much demand for electricity.

VOA: special.2009.11.15

When a brief pulse of electricity is sent to the read/write head it flips on a tiny electromagnet for a fraction of a second.

当一个简单的电脉冲被送到读写头,它会短时间内出现一个小的电磁。

哈佛公开课 - 计算机科学课程节选

Because it's a gel electricity is going to move through the gel because there are ions in it the same way - for the same reason you don't drop an electrical device into the bathtub because charge moves through water that has ions in it.

由于凝胶中存在离子,电流会通过凝胶,同样--,因为同样的原因你不会把电器扔进浴缸里,因为水里也有离子,所以水可以导电

耶鲁公开课 - 生物医学工程探索课程节选

Iran says its uranium-enrichment program is designed only for electricity generating purposes, and has allowed U.N.inspectors to visit a previously secret processing facility near the city of Qom.

VOA: standard.2009.10.28

Greenhouse gas emissions, such as carbon dioxide, are created in part by burning oil and coal for transportation and electricity.

VOA: special.2009.12.26

There are rules for companies that supply utilities like electricity and water to let competitors use their wires or pipes.

VOA: special.2010.03.19

It carried oxygen,water, electricity and food for two men for two days on the moon's surface.

VOA: special.2009.07.22

In Mozambique, thirteen people died in recent riots over higher prices for bread, electricity and water.

VOA: special.2010.09.21

The Tennessee senator also wants more exploration for offshore oil and natural gas, and more conservation and efficiency in electricity use.

VOA: standard.2009.04.25

"The government has identified the critical problem we have at the moment is electricity for all the population.

VOA: standard.2009.08.28

The shutdown is bad news for the recession-hit country partly because it will lose a source of cheap electricity and be forced to import more expensive energy.

VOA: standard.2010.01.01

"By imposing a tax on every American who drives a car or flips on a light switch, this plan will drive up the prices for food, gasoline and electricity,".

VOA: standard.2009.06.27

In addition they have been without electricity for two days.

VOA: standard.2009.10.03

The Iranian government strenuously insists its nuclear program is peaceful and its supplies of enriched uranium will be used to produce electricity for civilian nuclear power plants it is building.

VOA: standard.2009.10.28

"Recent protests in a number of cities denouncing the lack of electricity is a sign of potentially growing disillusionment and anger over what has become a situation of daily life for the average Iraqi citizen."

VOA: standard.2010.08.04