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

鸟翼上方气流在翼尖后方向上盘旋，这种现象被称作气流上洗。

Oh, with the white wing tips?

白色翼尖？

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

它也更宽，翼尖倾斜，同时保留其基本结构后掠角。

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

777X 折叠翼尖原因是它们是种节省空间措施。

His wingtip shoes crunch on gravel.

他翼尖鞋在砾石上嘎吱作响。

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翼尖设计，并且会是深色中性色。

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

它们翼尖是黑色，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是它折叠翼尖。

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， 可能会导致翼尖或发动机撞击地面。

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， 发现除了翼尖外， 所有都掉了下来。

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

您如何看待波音 777X 折叠翼尖？

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翼尖，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.

如果翼尖不折叠，喷气式飞机翼展将相当于波音 747 空客 A380。

It's 239 feet long, 79 feet tall and 262 feet wingtip to wingtip… orrrrrr, put simply, the length of two blue whales!

它长 239 英尺， 高 79 英尺， 翼尖到翼尖 262 英尺… … orrrrrr， 简而言之，两只蓝鲸长度！

Simple Flying was able to get up close and personal with the 777X at the  2021 Dubai Airshow, including the new wingtips.

Simple Flying 能够在 2021 年迪拜航展上近距离接触 777X，包括新翼尖。

Their quiet dignity reminded me of my great-uncle Terry, who'd lived downstairs when I was growing up on Euclid Avenue, mowing our lawn dressed in wingtips and suspenders.

他们安静尊严让我想起了我叔叔特里，当我在欧几里得大道长大时，他就住在楼下，穿着翼尖吊带修剪我们草坪。

Of course, Boeing is well aware of this and  had built several safety mechanisms into the aircraft to stop it from taking off with the  wingtips still folded.

当然，波音公司很清楚这点，并在飞机中内置了多种安全机制，以防止其在翼尖仍处于折叠状态时起飞。

Carlisle revealed that it is possible to set  the wingtips to automatically retract once the aircraft drops below 50 knots while landing, with the folding process taking around 20 seconds.

卡莱尔透露，可以将翼尖设置为在飞机着陆时低于 50 节时自动缩回，折叠过程大约需要 20 秒。

It's great to see confidence in your outfit perhaps not being afraid to try a paisley tie with a check shirt or pairing your wing tip shoes with your dark wash getup.

很高兴看到您对自己着装充满信心，也许不害怕尝试搭配格纹衬衫搭配佩斯利领带，或者将翼尖鞋与深色水洗套装搭配。

This gentle giant commands a special kind of respect since other airplanes have to wait up to three minutes before they can start their takeoff after an A380 due to the wake turbulence from its four engines and wingtips.

这个温柔巨人受到了特殊尊重，因为由于 A380 四个发动机翼尖产生尾流湍流，其他飞机必须等待长达三分钟才能在 A380 之后开始起飞。