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

VOA: special.2010.01.12

He says the actively changing nature of the Internet makes it difficult to stay current in studying its effects.

VOA: special.2010.01.28

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

"The ambiguity that's in those answers is very,very difficult for humans to understand, never mind a computer to understand.

VOA: special.2011.02.28

He said the most difficult period of the trip was crossing the Yukon Arctic and the Arctic National Wildlife Refuge in Alaska.

VOA: special.2011.03.23

The objects in the exhibit tell a story about government expansion during a difficult period in American history.

VOA: special.2009.01.02

But they say finding injured birds in the huge spill and sending out boats to rescue them will be a difficult job.

VOA: special.2010.05.04

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

The most difficult national problem facing the administration of President Franklin Pierce was the situation in Kansas.

VOA: special.2009.05.07

His first years in the United States were difficult, like those of most immigrants at that time.

VOA: special.2010.08.01

So they quickly passed a bill that made it much more difficult for Chinese citizens to come to live in the United States.

VOA: special.2010.03.11

The Democratic Party had a much more difficult time choosing a candidate for president in eighteen sixty-eight.

VOA: special.2010.02.11

We slept on the hard ground, ate canned beans from cold metal plates and spent our days in the difficult search for gold.

VOA: special.2009.07.04

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