Astronauts experience the feeling of weightlessness in planes.

宇航员飞机也会经历失重。

Astronauts in flight must adjust (themselves) to weightlessness.

宇航员飞行必须适应失重。

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

研究失重状态对壁虎性繁殖能力影响实验仍继续。

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

失重环境下, 人类身体会出现一些事情。

They also fly very well in a weightless environment.

它们失重环境下也能飞得很好。

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

由于失重状态我突然感到向天空急剧上升。”

Could they operate all right in zero gravity?

完全失重情况下他们能正常工作吗？

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

最大未知是......失重会对人体有什么影响。

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

这只是发生失重状态下健康问题一个例子。

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感觉。

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

一旦我们落入水，所有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能力。

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

那么为什么空间站上宇航员会“失重”呢？

Glenn will be weightless for nearly five hours.

Glenn 将经历五个小时失重。

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

不过现我们知道了，神失重感或许并不是那么有趣。

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

这里，他们演示了力是如何失重环境工作。

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

国际空间站上所有行动都会受到失重影响，烹饪也不例外。

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

为了能失重时看到令人称景色而做设计部分。

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

经历了约5分钟失重状态后，她从太空舱跳伞降落。