They also fly very well in a weightless environment.

它们在环境下也能飞得很好。

The words we say are weightless sounds in the air.

们说话在空气里是没有量。

So why then are astronauts on the space station “weightless”?

那么为什么空间站上宇航员会“”呢？

This render all passengers weightless for 25 seconds, no wires needed.

这会使所有乘客在 25 秒内，因此不需要威亚。

Glenn will be weightless for nearly five hours.

Glenn 将经历五个小时。

Here they're demonstrating how forces work in a weightless environment.

在这里，他们演示了力是如何在环境中工作。

The biggest unknown...how effective the human body can be when weightless.

最未知是......会对人体有什么影。

NASA's biggest concern...Shepard and Grissom were weightless for five minutes.

NASA 最关注是......Shepard 和 Grissom 经历了五分钟。

All you need is a jetliner, a parabola and voila, you're weightless.

你需要只是一架客机, 飞行个抛物线, 然后看看自己, 你已经了。

Once we get in the water, all of that becomes neutral and weightless.

一旦们落入水中，所有一切都变得中性和。

And that zeroes each other out, so you actually feel this like weightless feeling.

这两者相互抵消，所以你会有一种感觉。

The words we say are weightless sounds in the air. But they are powerful.

们说话听起来感觉没有什么量。但它们很有影力。

It's designed for when you're weightless and having this unbelievable perspective of our planet.

为了能在时看到令人称奇地球景色而做设计部分。

While weightless, Ham's put through a series of tests and performs well.

条件下 Ham 完成了一系列测试并表现良好。

When astronauts float weightless in space, their muscles don't need to work as hard as on Earth.

航天员漂浮在太空时，他们肌肉不需要像在地球上一样辛苦地工作。

A precise mechanism in the arm counterbalances the display, making the height and angle adjustments feel almost weightless.

机臂上精确机械装置平衡了显示器，使得调整高度和角度毫不费力。

But we're down here in this beautiful world and it is also a weightless, beautiful world.

但们在这个美丽世界里，这也是一个美丽世界。

Digital doubles allowed filmmakers to conquer more challenging weightless scenes, like these wide shots of crew outside the ather.

数字捕捉技术使电影制作人能够征服更具挑战性场景，比如这些在太空之外宽镜头。

But this changes in space because of microgravity-the weaker gravitational pull making things in space float and seem weightless.

但是由于微力——更弱万有引力使得太空中物体漂浮着，并且似乎没有量——这发生了变化。

It was thrown backwards, weightless as darkness, and as the stag charged, the Dementor swooped away, bat-like and defeated.

摄魂怪被撞得连连后退，像周围黑暗一样没有量。牡鹿冲上前去，摄魂怪像蝙蝠一样扑闪到一边，匆匆逃走了。