The air flowing over a bird's wings curls upwards behind the wingtips, a phenomenon known as upwash.

鸟上方气流在后方向上盘旋，这种现象被称作气流上洗。

It is also wider with raked wingtips while retaining its basic structure and sweep.

它也采用了后掠，从而使机变得更宽，同时保留了基本结构和后掠角度。

And this comic is all about a bug called the glassy-winged sharpshooter.

而这本漫画讲述种叫做玻璃头虫昆虫。

We're actually 3 feet apart, 3ft wing-tip clearance, at 250 miles and hour, 3 ft apart.

我们实际上相距3英尺，间距3英尺，在每小时250英里速度下，仅相距3英尺。

The reason for the 777X's folding wingtips  is that they're a space-saving measure.

777X 折叠原因它们种节省空间措施。

And then supposedly from watching buzzards and how their wingtips moved while they were in flight.

然后据说通过观察秃鹰以及它们飞行时运动。

These could feature a cap toe or wing tip design and would be a dark neutral color.

这些可能具有帽趾或，并且会深色中性色。

Their wingtips are black, and their under parts  are a whitish or tan colour with dark bands.

它们黑色，下部呈白色或棕褐色，带有深色条纹。

One of the unique features of the jet compared to other widebody commercial aircraft  is its folding wingtips.

与其他宽体商用飞机相比，这款喷气式飞机独特之处之它折叠。

An hour later I passed by again and all the butterfly was down except for the wing tips.

个小时后， 我再次经过， 发现除了外， 所有蝴蝶都掉了下来。

Oh, with the white wing tips?

白色？

His wingtip shoes crunch on gravel.

他鞋在砾石上嘎吱作响。

Two Argentine Skyhawk fighter jets slice through the South Atlantic sky, trails of white vapor tumbling from their wingtips.

两架阿根廷天空鹰战斗机划过南大西洋天空，拖着白色尾迹。

Because of big angle during landing, it may cause the wingtips or engines to hit the ground.

由于着陆时角度大， 可能会导致或发动机撞击地面。

And our friend, the glassy-winged sharpshooter, makes a return in the comic Captain Cicada and the Justice League.

我们老朋友， 玻璃头虫，在漫画《蝉队长与正义联盟》中再度登场。

The broad-winged, shark-taloned bird of prey was clearly hunting some furry critter or another, a mouse perhaps or a rabbit.

那只宽如鲨鱼爪猛禽显然在猎捕些毛茸茸小动物，可能老鼠或者兔子。

And how do you even measure the speed at which this glassy winged sharpshooter ejects its pee into the world?

那么，你如何测量这种玻璃头虫向外界喷射尿液速度呢？

The plane won't automatically extend  the wingtips before take-off, though, with the task falling to the pilots.

不过，飞机不会在起飞前自动展开，任务落在了飞行员身上。

If the wingtips didn't fold, the jet would  have a wingspan equivalent to the Boeing 747 and the Airbus A380.

如果不折叠，喷气式飞机展将相当于波音 747 和空客 A380。

What do you make of the Boeing 777X's folding wingtips?

您如何看待波音 777X 折叠？