Larger feathers could have increased lift incrementally, until sustained flight was gradually achieved.
较大的羽毛可以逐渐增加升力，直到逐渐实现持续的飞行。
But how does NASA plan to get the scramjet to the supersonic speeds necessary for sustained flight?
不过，太空署要如何使得超燃冲压发动机进入持续飞行需要的超音速呢？
In 2005, the 9th prototype achieved sustained flight times, laying the foundation for a viable and successful pre-production prototype to be developed.
在2005年，第九原型实现持续飞行时间，为建立一个可行的和成功的前生产原型开发。
The belly-mounted system is remotely operated and capable of delivering accurate, sustained fire throughout the CV-22's flight envelope.
该系统位于机腹，通过远端操作工作，能够在CV-22飞机的整个飞行过程中提供精确的、持续的火力保护。
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。
Also on Tuesday, a Qantas Boeing 717 sustained minor damage to its fuselage when it was struck by lightning during a domestic flight between Alice Springs and Darwin.
无独有偶，该公司一架来往于本国爱丽斯泉和达尔文市之间的波音717客机也因被闪电击中造成机身轻微折损。 至此，澳航从空客A380引擎事件以来已发生4次中途折返。
When the uncertainty is prolonged, people stay in a sustained "fight or flight" response, which leads todamaging stress.
当不确定性被拖延的时候，人们会处于一种持续的“战或逃”的反应，而这会导致产生损害性压力。
Man's flight through life is sustained by the power of his knowledge.
生命航程是知识的能量支持的。
In order to carry out high G-load flight training on the ground, research on new principles of G-load simulation for a novel sustained-G flight simulator (SGFS) is necessary.
为了能够在地面开展高过载的飞行员飞行训练，需要对新型持续载荷飞行模拟器(SGFS)持续性过载模拟的新原理进行研究。
In order to carry out high G-load flight training on the ground, research on new principles of G-load simulation for a novel sustained-G flight simulator (SGFS) is necessary.
为了能够在地面开展高过载的飞行员飞行训练，需要对新型持续载荷飞行模拟器(SGFS)持续性过载模拟的新原理进行研究。
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