They may have a weak or damaged heart, high blood pressure or other problems of the blood system.

VOA: special.2010.07.27

"If the monsoon basically fails or is a very weak one, the trees affected by monsoons at that location might put on a very narrow ring.

VOA: special.2010.05.25

But some have had to cancel or cut back because of the weak economy.

VOA: special.2010.08.02

And that will be a very tough battle." As in many countries, America's elected officials are loathe to raise taxes or cut spending, particularly when the economy is weak and millions are out of work.

VOA: standard.2010.04.21

"It showed the regime, which is very strong in front of innocent people, unarmed people in the streets of Tehran or Tehran University or the streets of Isfahan or other cities, is very weak in front of people who are carrying arms,"

VOA: standard.2009.10.19

"He is at 50 or below in most surveys, and that is mainly because of the economy, which continues to be stubbornly weak, the unemployment rate is very high and still in double-digits, and as a consequence Obama does not have much margin for error,".

VOA: standard.2010.01.06