When he took office several months later, he faced the most serious crisis in American history.

VOA: special.2009.07.16

When she returned to the United States she again suffered a serious sickness.

VOA: special.2009.07.26

This is when the bone breaks the skin.This is very serious.

VOA: special.2009.02.04

Then,when the parasite enters the brain, it causes more serious problems.

VOA: special.2010.04.07

"At a time when we're fighting two wars and facing a serious deficit, this would have been an inexcusable waste of money.

VOA: standard.2009.07.21

The most serious occurred in 1918 when upwards of 50 million people are believed to have died.

VOA: standard.2009.05.14

It was the most serious clash on the border since the Lebanon War four years ago, when Israel battled the Islamic guerrilla group Hezbollah.

VOA: standard.2010.08.03

And,there is a serious problem when you use the term 'regime change' that you might encourage people to demonstrate,or to act in ways, where we can do absolutely nothing to protect or encourage them."

VOA: standard.2010.06.11

In fact most global automakers have signaled that they are going ahead with plans to open new factories in India at a time when many of them are facing a serious slump in their home countries.

VOA: standard.2009.03.13

"And this is why we are asking the United States to ensure that material assistance and training that is given to security forces in Somalia are accompanied by vetting of personnel and the creation of specific mechanisms to respond to serious abuses when they occur,"

VOA: standard.2009.07.31