Early identification of the disease may be difficult because many infected people do not show any immediate symptoms.

VOA: special.2010.01.04

However,this is more difficult because it is harder to control the diets of people and because they live longer than other animals.

VOA: special.2009.09.01

We all know that some people do not seem as emotionally strong as others when life gets difficult.

VOA: special.2009.06.24

President Obama also spoke about the difficult time people in the Gulf area were going through as a result of the oil spill.

VOA: special.2010.06.18

America's third party at that time -- The People's Party -- had a difficult decision to make.

VOA: special.2010.07.01

But it was often difficult. To protect their towns,the settlers often had to employ people who were expert in the use of firearms.

VOA: special.2010.03.10

This has made it even more difficult for many people to rebuild their lives and communities.

VOA: special.2010.01.22

Yet many people today cannot see the Maze District because it is so difficult to reach.

VOA: special.2009.04.15

The people spoke a difficult language that had never been written down.

VOA: special.2010.01.17

The people of the South faced a difficult future.

VOA: special.2010.01.14

Some people say roses are difficult to grow.

VOA: special.2010.06.15

But it became increasingly difficult to continue the crackdown as the protests grew to hundreds of thousands of people.

VOA: standard.2009.11.17

And people who are giving have endured this very difficult 12 month period and so giving is down,"

VOA: standard.2009.12.16

Yet,health clinics can be difficult to get to in rural areas and people are more likely to go to a traditional healer first.

VOA: standard.2009.04.25

And it will be very difficult to convince the people to turn out,to show up."

VOA: standard.2009.10.25

"We have not shied away from raising the difficult problems that exist and stand in the way of the people of Africa realizing their potential.

VOA: standard.2009.08.16

"The problem with that body of research is that it's difficult to interpret because obviously people with existing mental health problems use cigarettes to self-medicate."

VOA: standard.2010.06.15

That means poor people find it difficult to buy healthful food.

VOA: standard.2010.07.02