The electric system is unable to offer all the power needed in an area.

VOA: special.2009.11.15

That is the power of having a rationalized system of units. That is the good news.

这就是拥有合理单位的好处,这可是个好消息。

麻省理工公开课 - 固态化学导论课程节选

And this is very important, because the Romans, as their power grew in the East, they simply moved increasingly into the eastern Mediterranean and they adopted the whole Greek system, the Greek world, and they didn't even try to make it non-Greek.

这点非常重要，因为随着罗马人的势力在东方日渐壮大，他们不断朝地中海东部推进,并采取了全套希腊系统，希腊世界，甚至没有作出任何非希腊式的改变。

耶鲁公开课 - 新约课程节选

The Apollo spacecraft lost electrical power to its control system.

VOA: special.2009.07.29

Russia says the European missile defense system changes the balance of power and threatens its nuclear arsenal.

VOA: standard.2010.03.26

Even President Umaru Yar'Adua admitted "lapses and shortcomings" in the vote which brought him to power and promised to fix the flawed electoral system.

VOA: standard.2009.08.22

And for decades, whenever we have tried to reform the system, the insurance companies have done everything in their considerable power to stop us,".

VOA: standard.2009.10.17

A month later a Lebanese power-sharing system was formed to divide power under religious lines.

VOA: standard.2009.09.24