Men may only use their right hand to swing the mallet, while women may use both hands.

BBC: Polo-playing elephants in Nepal

Use both hands to receive a card and look at it immediately.

ECONOMIST: Business travel

At the same time, Fitch struggled on his knees as he was forced to use both hands to muscle the plane's throttle levers, which also had become hard to move.

CNN: Can airliners really fly upside down?

However, slightly lower on the evolutionary scale I spoke to London Zoo to ask whether monkeys had right or left handed preferences and I discovered that they tend to use both left and right, and hands and feet, interchangeably.

BBC: The sinister tale of left handers

What soldiers say they really could use are small, hands-free devices that translate speech in both directions, as people talk to them.

NPR: Tech Solutions to Iraqi-U.S. Language Barrier

Production could be stabilized at 200, 000 barrels a day if Iran invested in gas reinjection--assuming it could get its hands on both the gas and the technology to use it.

FORBES: Magazine Article

It's intended for use in working environments where people need to access complex information, and having both hands free is an important priority.

BBC: Motorola unveils a computer that straps onto your head