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1·As feathers became larger over time, flapping flight evolved and birds finally became fully air-borne.

随着时间的推移，羽毛变得越来越大，扑翼飞行逐渐发展，鸟类最终完全可以在空中飞行。

2·Because they were bipedal, their arms were free to evolve flapping flight, which cannot be said for other reptiles of their time.

因为它们是两足动物，它们的手臂可以自由地进化出拍打的翅膀，这在当时的爬行动物中是不可能的。

3·As micro flapping flight is investigated further, its control is paid more attention to.

随着微扑翼飞行器研究的不断深入，对其控制问题研究已引起了人们的重视。

4·Based on the mass properties of each component of a flapping vehicle are generally measurable and constant we set up the corresponding equations of motion for flapping flight.

基于各部件质量的可测性且为常数的特点建立相应的扑翼运动方程。

5·These conclusions illustrated by the wing behavior at level flight but the described properties and relationships give the opportunity to explain the other types of modes of the flapping flight.

这些结论说明了机翼的行为在水平飞行，但所描述的属性和关系的机会提供给解释其他类型的模式，该扑飞行。

6·The two insects have complex flight mechanisms with major muscles in the thorax, the chest region, which power the flapping of wings.

这两种昆虫的飞行机理比较复杂，胸部长有较多肌肉，这样它们才能有力量振动翅膀。

7·The new work, Daniel says, uncovers the flight signatures of flapping, flexible wings.

丹尼尔说，这项新的研究揭示了拍动式柔性翼的飞行特征。

8·Some scientists argue that feathered dinosaurs evolved flight from the ground up, flapping their feathered arms as they ran.

一些研究者认为羽毛恐龙是从零开始进化出飞行能力的，它们在奔跑中会拍动自己带羽毛的前肢。

9·Furiously flapping, a chukar partridge speeds up a ramp at the University of Montana flight lab.

在蒙大拿大学飞行实验室中，一只石鸡拼命扇动翅膀加速冲上斜坡。

10·Despite these limitations, the model insect proves that swallowtails still achieve forward flight with simple flapping motions, say the researchers.

尽管有这些局限，这个昆虫模型证明了燕尾蝶只需简单地轻拍翅膀便能向前飞行。研究者们说。