Here is how they work: Cows are trained to follow a series of paths that lead to milking stations.

VOA: special.2009.05.12

He told a crowd of thousands that he and his fellow crew members were just doing the job they were trained to do.

VOA: special.2009.01.30

The following year, twenty-five women were trained to fly an airplane known as the "Widowmaker."

VOA: special.2010.11.08

Dogs that are specially trained to smell landmines can be used to map out minefields.

VOA: special.2010.05.03

Test pilots already were trained to make quick, correct decisions in dangerous situations.

VOA: special.2009.06.10

Later,fire companies were organized with men who were trained to fight fires.

VOA: special.2009.05.17

Test pilots are trained to think quickly in dangerous situations.

VOA: special.2011.05.15

He says that on Friday Night, a special investigative team was dispatched to the scene, including officers trained to investigate serious crimes.

VOA: standard.2009.11.27

The centers are run by an ophthalmic assistant who is trained to conduct a full eye examination, administer diagnostic tests, treat simple ailments and prescribe glasses.

VOA: standard.2010.05.25

She says many children in the North-West Frontier Province of Pakistan have been forcibly recruited by the militants and allegedly trained to become informants, fighters or suicide bombers.

VOA: standard.2009.09.16

Distribution began late last year and the plan is to have one million books in schools and 3,200 teachers trained to use it by the end of this year.

VOA: standard.2010.04.19

"Well it seems to me if we train officers to do a particular thing and put them into situations where that training is required and then we see pictures of them doing what they have been trained to do, we cannot simply wash our hands of it at that point and say how awful it is,right?" "We have to share some of that responsibility.

VOA: standard.2009.04.21

There is no danger to our working men from the coming of skilled workers or of trained and educated men.

VOA: special.2010.05.20

As part of the research project, nine farmers were given materials and trained how to build and use a hoop house.

VOA: special.2009.12.22

A circus moved from town to town, putting on shows with trained animals, acrobats doing difficult tricks, and funny, colorful clowns.

VOA: special.2009.01.11