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。

youdao

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。

youdao

On December 17, 1903, the Wright Brothers embarked on the first sustained, heavier-than-air, man-powered flight aboard the Wright Flyer.

1903年12月17日，莱特兄弟驾驶自己制造的第一架飞机“飞行者1号”，在美国北卡罗莱纳州的基蒂霍克海滩，进行了首次有动力驱动的持续飞行。

youdao

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