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As the young bird matures, such controlled descent gradually gives way to powered flight.

一旦幼鸟成熟，类似这样的可控降落就会演变成为动力飞行。

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Paul MacCready'sGossamer Condor, which made the first successful human-powered flight asrecently as 1977, was some improvement on these.

保罗·麦克格雷迪的“幻影神鹰号”却在飞行领域取得突破，它完成了自1977年以来首例成功的人力驱动飞行。

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And so begins the first powered flight of the experimental plane designed to take man to the edge of space.

VOA: special.2010.07.07

The Sonex and Sikorsky projects are two examples in a growing field of innovation in electric powered flight - most in their infancy.

VOA: standard.2010.08.11

Craig Willan is a flight engineer. He's closely monitored the development of electric powered aircraft.

VOA: standard.2010.08.11

The spaceplane being developed by UK billionaire Sir Richard Branson has made its first powered flight.

BBC: Science correspondent, BBC News

Mrs Woodman was an 11-year-old girl when the Wright brothers made history with the first powered flight in 1903.

BBC: Old and bold

To some it might have seemed at odds with the new era of the atom bomb and jet-powered flight.

CNN: The Kon-Tiki: Crossing an ocean on balsa