The problem was that after successfully floating over one wave you find that there is another one behind it just as strong and ready to flood your boat.

VOA: special.2011.04.09

Another problem is that the vaccine must be kept extremely cold.

VOA: special.2009.11.03

But another problem noted by the task force is overdiagnosis.

VOA: special.2009.11.18

Another problem is that neighboring Greece refuses to recognize the name Macedonia and has therefore blocked the country's attempt to join NATO.

VOA: standard.2009.03.22

Another problem is access. Connecting informal communities to the city's water pipeline is a challenge because many are living on the land illegally.

VOA: standard.2010.08.04

But he says Ireland is not the last obstacle. He says another big problem is that the president of Czech Republic Vaclav Klaus has also not signed.

VOA: standard.2009.10.02

Another problem is money. The World Health Organization says the Stop TB effort needs $2 billion to carry out its TB care and control program in 2010.

VOA: standard.2009.12.09