When people began sailing out of sight of land, sailors did not know how to tell where they were on the open sea.

VOA: special.2010.07.14

"I'm at home,digging in the dirt, or doing something that is very close to the Earth, because that's where I know how to survive."

VOA: special.2009.06.07

I filled this room with expensive scientific equipment that I did not know how to use.

VOA: special.2011.06.18

It was a place where people owned things that they did not know how to use.

VOA: special.2010.01.03

A navigator also had to know how to use a complex instrument called a sextant.

VOA: special.2009.12.23

He said the Earth is like a large mechanical device that will survive only if people living on it know how to operate it correctly.

VOA: special.2010.05.30

If a person's heart stops, would you know how to perform CPR?

VOA: special.2009.05.20

Millicent complained that he did not know how to enjoy life.

VOA: special.2009.01.31

All cooks need to know how to saut.

VOA: special.2010.04.18

Some did not know how to fight.

VOA: special.2009.11.26

"We need an army of people who are equipped to know how to work at all levels and all scales, from protecting animals in the wild to providing shelter to them in zoological parks if necessary."

VOA: special.2010.06.22

The government also is giving its all to make sure people know how to protect themselves from getting HIV/AIDS.

VOA: standard.2010.05.29

"Our mission is that to have to educate first to make them know how to invest in the market in the future."

VOA: standard.2010.07.21

The World Health Organization and the UN Children's Fund say they know how to prevent these deaths.

VOA: standard.2009.11.02