But its power over Internet and wireless communications has long been questioned.

VOA: special.2010.04.09

So for example I defined p, remember back over here, as a Cartesian point, but I can actually ask for its polar form.

我可以要求返回它的极坐标形式，这里对我是可访问的，好，这很棒，请再记另外一个为什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

In this case, death from heart disease and what you see here, and I'll tell you what relative risk is in just a minute, but this is basically risk for disease over on this axis and here its weight.

在这幅图里是心脏病致死的,我会简短地介绍一下相对风险的定义,Y轴表示患病风险,X轴表示体重

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But pro-democracy groups say the military is using the 2010 election to extend its control over the country through an elected parliament.

VOA: standard.2009.05.15

But the Palestinian Authority is furious over the Israel raid, which took place in territory under its control.

VOA: standard.2009.12.27

Iran may have mixed feelings about Turkey's rise but Ankara is firm in its resolve to prevent the likelihood of military action over its neighbor's nuclear program.

VOA: standard.2010.07.26

But negotiations have been stalled for months over Pyongyang's refusal to accept a verification program for the declaration of its nuclear holdings and activities it made last June.

VOA: standard.2009.03.25

On the other hand Wal-Mart has gone through a tremendous effort over the last couple of years to integrate environmental sustainability into not only its own practices but to force this into the supply chain."

VOA: standard.2010.01.23