Their cost is low. They are not difficult to operate.

VOA: special.2009.09.29

CPR is not difficult to learn.

VOA: special.2009.08.11

Flu vaccines are not difficult to produce, but the drug companies found this virus difficult to grow.

VOA: standard.2010.04.29

I did not want them to be difficult or to get in my hair while I was working on the computer.

VOA: special.2009.05.03

Police say one thing that makes discussion of this law difficult is that many critics have not read the law.

VOA: special.2010.07.03

One of the more difficult walks is an eight kilometer hike that is not for anyone afraid of high places.

VOA: special.2009.04.15

But protecting plants and trees in the garden may not be too difficult if you follow a few suggestions.

VOA: special.2010.01.12

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

VOA: special.2009.06.24

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

VOA: special.2010.01.04

Jane Ziegelman says from the nineteenth century on, immigrants would take difficult jobs that non-immigrants would not do.

VOA: special.2010.08.25

Others disagreed. In any case, it was not a good time to argue it was the Great Depression, and times were difficult.

VOA: special.2009.12.29

A more difficult hike is eight kilometers long and not for those afraid of heights.

VOA: special.2009.09.28

But the story of the cowboy and his difficult life would not be forgotten.

VOA: special.2010.03.18

She says her message to them is: "Do not fear difficult moments.

VOA: special.2009.05.13