The gulls flew off, wings flapping.
海鸥扑打着双翅飞走了。
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。
She walked up and down, flapping her arms to keep warm.
她来回走动，挥动着双臂使身体暖和起来。
The eagle can soar without flapping their wings.
老鹰无需振翼就能翱翔。
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。
"Angry Birds" is flapping from touch screens to big screens, books and toys. Will one of the best-known mobile apps become an entertainment franchise?
“愤怒的小鸟”已经从触屏手机飞到了电影院、图书和玩具上，那这个最出名的手机应用程序之一会不会成为娱乐产业呢？
Coloured flags were flapping in the wind.
彩旗在风中飘荡。
Each time it lands, its wings stop flapping and their colours come into focus.
每当落下的时候，它的翅膀平展开来，颜色清楚地展现出来。
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。
It would be like him to trot after me, his navy blazer flapping, just to eke the truth out of me.
好像他小跑跟在我身后，他那海军蓝的上衣随风飘动，只是为了逼我把事实说出来。
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。
It would be wrong for us to start flapping about now and say that we didn't know what we were doing.
现在开始动摇，说我们不知道自己在干什么可不对。
It followed them, flapping double time, until it caught up, until it joined the last end of the elegant line.
它紧跟着天鹅，加倍抖动着双翅，终于赶上它们并变为了那条优美线条最后的一个点。
"Flap" sounds like something (a flag, a sail) flapping, and "flop" is the dull sound of something falling down flat.
而flop听着就象什么东西直直落地发出的沉闷一响.
The flapping wings of the hovering robotic insects (known as ornithopters) are very thin, lightweight and yet strong.
机器飞虫（被称为扑翼机）扑打的翅翼非常纤薄、轻质，却很牢固。
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。
A wiener dog at full throttle, flying down the lane with his ears inside out and tongue flapping, is a sight worth seeing.
一只腊肠狗开足了马力飞奔在赛道上，耳朵紧夹，舌头长垂，这绝对是一个值得观看的景象。
A host or service is determined to have started flapping when its percent state change first exceeds a high flapping threshold.
当主机或服务的状态更改百分比超过最高限值时，主机或服务就会发生震荡。
The foreign embassies have been moved to Jianguomen, in the Chaoyang district, European Union flags flapping over the wire fences.
国外的使馆都迁到了朝阳区的建国门，欧盟的旗帜拍打着那里的铁栅栏。
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。
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。
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。
The flapping wing represents a small change in the initial condition of the system, which causes a chain of events leading to large-scale alterations of events.
翅膀的扇动代表了在系统初始条件中的一个小小的改变，而这改变引发了一连串的事件，导致了事件的大幅度改变。
I have spent infinitely more time flapping over my choice of sandwich than over my choice of career, or of spouse - which at first sight seems rather upside down.
我为选择三明治而焦虑的时间，远长于为选择职业或伴侣而焦虑的时间——乍看之下，这二者似乎应该反过来。
From a thousand feet, flapping his wings as hard as he could, he pushed over into a blazing steep dive toward the waves, and learned why seagulls don't make blazing steep power-dives.
从一千英尺高空，他使劲地拍着翅膀，朝着海浪垂直疾降，于是他懂得了海鸥不作垂直疾降的道理。
From a thousand feet, flapping his wings as hard as he could, he pushed over into a blazing steep dive toward the waves, and learned why seagulls don't make blazing steep power-dives.
从一千英尺高空，他使劲地拍着翅膀，朝着海浪垂直疾降，于是他懂得了海鸥不作垂直疾降的道理。
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