Which one costs me more gas? Using an Air conditioner or open windows?

哪个更费油？开空调还是开车窗？

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The first, called Ease, is a mere foot in diameter by 16-inches tall and can fly safely in tight spaces or through open windows or doors, thanks to its petite size and ducted rotors.

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Normally I have five or six browser windows open on two screens of my computer, plus the phone on the desk.

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Police distributed leaflets advising people who live on the streets where the Pope is expected to proceed not to open windows or leave their homes.

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