But professors at big schools say there is not enough time to write evaluations for each student in large classes.

VOA: special.2009.03.05

And if that is not fast enough, then people can drive to another part of the modern transportation system: the airport.

VOA: special.2010.04.26

But the professor says it is difficult to find enough feathers from a single dinosaur to recreate all its colors.

VOA: special.2010.03.16

Alaska is on the border of northwestern Canada, far enough north that part of it is within the Arctic Circle.

VOA: special.2009.03.02

But it is enough to feel the excitement of those gold seekers more than one hundred years ago.

VOA: special.2009.02.11

The experts also say there is not enough evidence to decide about the benefits and harms of testing women seventy-five or older.

VOA: special.2009.11.18

Conservation groups criticized the move, saying the cut is not big enough to support the recovery of bluefin tuna in the Mediterranean.

VOA: special.2010.12.14

It says there is not enough evidence to decide about either digital mammography or magnetic resonance imaging instead of traditional film mammography.

VOA: special.2009.11.18

If your home is very small, you might say there is not enough room to swing a cat.

VOA: special.2009.09.27

An estimated seventeen percent of the labor force either lacks a job or is not working enough to pay all the bills.

VOA: special.2009.12.18

This person is very poor and only has enough money for the most important things in life,like food.

VOA: special.2010.06.20

She says many students are sleepy and unable to pay attention in class because there is not enough food for them at home.

VOA: special.2009.08.24

The researchers have developed rules to predict if a head injury is serious enough for a scan.

VOA: special.2009.10.28

Dementia is the loss of thinking ability that is severe enough to interfere with daily activities.

VOA: special.2009.09.15