1·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。
2·He thinks microraptor used its hind wings only for gliding, folding them out of the way for powered flight.
他认为，顾氏小盗龙仅仅用后翼来滑翔，在加力飞翔时，便折叠起来，以免挡道。
3·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。
4·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。
5·It was as though Orville and Wilbur Wright had not just discovered powered flight but had built a plane with tray tables and a duty-free service.
那时赖特兄弟好像还没有发明动力引擎飞机，但用折叠餐桌和免税服务引擎的购物中心已经起飞。
6·John McCurdy pilots Alexander Graham Bell's experimental tetrahedral kite, the Cygnet III, which left the ground via powered flight in March 1912.
1912年3月，约翰·麦柯迪试驾亚历山大·格雷厄姆·贝尔的实验性四面体风筝，通过动力飞离地面的“小天鹅3号”。
7·Sunday's flight clears spaceship builder Scaled Composites to begin rocket-powered flights next year, and test flights in space in late 2011 or early 2012.
周日的飞行明确了宇宙飞船建造商s caled Composites将要在明年开启装有火箭发动机的飞行计划，在太空中的试验飞行将在2011年底或2012年初进行。
8·Should all go according to plan, Yiqing will bring Mozi to the Birdman Rally in Japan, where he hopes to break the duration record for human-powered flight.
如果一切按计划进行，毛一清还打算把“墨子”带去日本的鸟人大赛，他希望在那里打破人力飞行器飞行时间的记录。
9·Climbing during daylight hours, the prototype aircraft ultimately reached an altitude just short of 30, 000 meters, breaking records for non-rocket powered flight.
在白天爬升，原型机最终达到海拔30000米的高度，打破了非火箭动力飞行的高度纪录。
10·In those earliest days of powered flight, when so much had yet to be proven about aircraft technology and handling, almost any pilot was a test pilot of sorts.
在动力飞行，那些最早的日子，这么多尚未被证明是对飞机的技术和处理，几乎所有的驾驶员是各种各样的试飞员。