They also fly very well in a weightless environment.

它们在失重环境下也能飞得很好。

The words we say are weightless sounds in the air.

我们说的话在空气里是没有重量的。

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

那么为什么空间站上的宇航员会“失重”呢？

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

这会使所有乘客在 25 秒内失重，因此不需要威亚。

Glenn will be weightless for nearly five hours.

Glenn 将经历五个小时的失重。

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

在这里，他们演示了力是如何在失重的环境中工作的。

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

最的未知是......失重会对人体有什么影响。

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

NASA 最关注的是......Shepard 和 Grissom 经历了五分钟的失重。

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

你需要的只是架客机, 飞行个抛物线, 然后看看自己, 你已经失重了。

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

旦我们落入水中，所有的切都变得中性和失重。

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

这两者相互抵消，所以你会有种失重的感觉。

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

我们说的话听起来感觉没有什么重量。但它们很有影响力。

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

为了能在失重时看到令人称奇的地球景色而做的设计部分。

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

失重条件下 Ham 完成了系列的测试并表现良好。

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

当航天员漂浮在失重的太空时，他们的肌肉不需要像在地球上样辛苦地工作。

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

机臂上精确的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.

但我们在这个丽的世界里，这也是个失重的丽世界。

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的失重场景，比如这些在太空之外的宽镜头。

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

但是由于微重力——更弱的万有引力使得太空中的物体漂浮着，并且似乎没有重量——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，像周围的黑暗样没有重量。牡鹿冲上前去，摄魂怪像蝙蝠样扑闪到边，匆匆逃走了。