But many also say they do not have enough time to do the work themselves and are under great pressure to do well in school.

VOA: special.2009.04.23

First of all, I'm very pleased when this happens, because I'm pretty confident that I can do this under duress, but I may not do it right every time.

首先,我非常乐意你们指出我的错误,因为虽然我对这些公式了如指掌,但我并不能保证每次都写对

耶鲁公开课 - 基础物理课程节选

Under those conditions, the cats do not fight.

VOA: special.2010.06.22

The group said most women under 50 do not need regular mammograms and that women over 50 should only get them every other year.

VOA: standard.2009.12.06

But he did not say how the Palestinian authorities planned to do that, since the Gaza Strip is under the control of Hamas and not the Palestinian Authority.

VOA: standard.2009.11.04

President Obama has restricted the conditions under which the United States would consider using nuclear weapons, but stipulated that the limitations do not apply to any potential confrontation with Iran or North Korea.

VOA: standard.2010.04.11