Astronauts experience the feeling of weightlessness in planes.

宇航员在机会经历失重。

Astronauts in flight must adjust (themselves) to weightlessness.

宇航员在行必须适应失重。

The experiment into the effect of weightlessness on reptiles' sexual reproduction is still continuing.

研究失重对壁虎性繁殖力影响的实验仍在继续。

In the absence of gravity, the human body does some bizarre things.

在失重的环境下, 人类的身体会出现一些奇怪的事情。

They also fly very well in a weightless environment.

它们在失重环境下得很好。

I suddenly got a feeling of soaring into the sky because of the zero gravity.

由于失重突然感到向天空急剧上升。”

Could they operate all right in zero gravity?

在完全失重的情况下他们正常工作吗？

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

最大的未知是......失重会对人体有什么影响。

That's just one example of health problems that occur in zero-gravity.

这只是发生在失重下的健康问题的一个例子。

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

这两者相互抵消，所以你会有一种失重的感觉。

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

一旦们落入水，所有的一切都变得性和失重。

He noted that a lack of gravity can change the fluid pressure in living things.

他指出，失重会改变生物体内的流体压力。

Uniformly, these people experienced weightlessness and the sensation that their bodies were being stretched lengthwise.

同样，随着身体纵向延伸，他们会感到失重和感知力。

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？

Glenn will be weightless for nearly five hours.

Glenn 将经历五个小时的失重。

But now we've learned that the magical feeling of weightlessness can become much less fun.

不过现在们知道了，神奇的失重感或许并不是那么有趣。

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工作的。

Weightlessness creates issues for everything aboard the ISS, and cooking is no exception.

国际空间站上的所有行动都会受到失重的影响，烹饪不例外。

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

为了在失重时看到令人称奇的地球景色而做的设计部分。

After experiencing weightlessness for about five minutes, she parachuted back down in a capsule.

在经历了约5分钟的失重后，她从太空舱跳伞降落。