The surprise visit came at a time when the United States and other countries have been putting more pressure on North Korea.

VOA: special.2009.08.08

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

"There is no pressure. I have gone through pressure up to this time, so I need a cool head.

VOA: standard.2009.10.15

US President Barack Obama warned Iran, at the time,that it would face "increased pressure" if it failed to reveal all of its nuclear activities.

VOA: standard.2009.10.24

Also during that time, doctors increased prescriptions for medications to control blood pressure...

VOA: standard.2010.06.04

In the study,patients who received lower doses of steroids by mouth spent less time in the hospital, and their risk of side effects such as glaucoma, high blood pressure and edema, or swelling in the legs, was reduced.

VOA: standard.2010.06.21

And I still believe that in Africa we have been going through this kind of pressure for a pretty long time, so I believe that when it comes we can handle it and lift the cup on Friday,".

VOA: standard.2009.10.15