1·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。
2·After numerous nights of searching, they figured out the noise sounded like something flapping in the water and it came from the bathroom pipe on the first floor.
经过无数个晚上的调查，他们发现那个声音听起来像什么东西在水里拍打，来自一层楼的浴室的水管。
3·I am standing with a flapping rubber mat on a broom handle trying to contain the edges of the wall of fire as it marches across the buff-colored field.
我站在那里，用绑在扫帚把上的橡皮垫拍打火苗，试图控制火墙的边界，阻止它向淡黄色的田野蔓延。
4·We also flapping its great wings to fly.
我们也拍打其巨大的翅膀飞翔。
5·Footage shows another swan also rushing over before they both start aggressively pecking at the swimmer and flapping their wings at him.
照片显示，另一只天鹅也冲过来，他们开始猛啄这名男子，还扇着翅膀狠狠拍打他。
1·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。
2·That's because the bends and twists in locusts' flexible, flapping wings power the insects' extraordinary long-distance flights, a Sept. 18 Science paper reveals.
这是因为，9月18日《科学》杂志的一篇文章解揭示了蝗虫那柔性的、拍动的翅膀在弯曲和扭转时，如何为它的超长距飞行提供动力。
3·Now set her down on a table or other flat place. Her wing will suddenly stop flapping. Turn the switch off when you are not playing with your fairy.
现在将她放在一张桌子上面或放在其他扁平的地方。她的翅膀将会突然停止拍动。当你不飞行飞仙女时请关掉开关。
4·Thus, it can deal with more complex background scenes, such as waving leaves and flapping flags.
因此，它可能应付更加复杂的背景场面，例如挥动的叶子和拍动旗子。
5·She relished her new pool and spent hours swimming, diving and flapping those misshapen, yet rapidly developing wings.
它喜欢那新池子，一天几个小时游水，潜水，拍动它那形状怪异但迅速长大的翅膀。