At the time, scientists believed that a person at the top of the mountain would only have enough oxygen to sleep.

VOA: special.2010.06.30

A new mother,for example, quickly learns to try to sleep when her baby is quiet, even in the middle of the day.

VOA: special.2010.01.31

The site gives these example sentences: "After laying down his weapon, the soldier lay down to sleep."

VOA: special.2010.02.11

That I'll leave no stone unturned, and that I'm able to go to sleep at night with no regrets at what I've done."

VOA: special.2009.12.28

Experts say if you decide to put your baby to sleep with a bottle, give only water.

VOA: special.2009.03.11

As the boat moved slowly up the East River in New York, the doctors put President Cleveland to sleep with an anesthetic drug.

VOA: special.2010.06.17

McDivitt and White had to learn to sleep and work as things floated around their heads.

VOA: special.2009.06.24

And if they do not have a traditional coffin to sleep in during the day, they can find other answers, such as using a car.

VOA: special.2010.01.20

Enilton Neymakes in Brazil goes to sleep late and wakes up in the afternoon.

VOA: special.2010.10.14

The California family went to sleep in their warm camper and never woke up.

VOA: special.2010.02.02

They all went to sleep. The next day, other people found the family.

VOA: special.2010.02.02

Then we rode on into the night, looking for a place to sleep.

VOA: special.2010.01.30

Then the old man and woman held the rain babies in the palms of their hands or they rocked them to sleep in a pair of wooden shoes.

VOA: special.2009.02.28

And they were not permitted to sleep at hotels for whites.

VOA: special.2009.04.05