4月2日，我们告别了天宫一号——中国的第一个空间实验室。

On April 2, we said goodbye to Tiangong I, China's first space lab.

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GBD是最具当代性和开放性的空间实验。

GBD - is the most modern and open space experiments.

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这些实验能提供足够深刻的见解，从而将把人送到星际空间的花费合理化吗？

Could those experiments provide insights profound enough to justify the expense of sending people across interplanetary space?

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So it's really the upfront cost to move to this, in terms of classroom space and developing pedagogy, and buying us top experiments.

因此搬到这种教室,才是最主要的花费，其中包括教室空间设置,开发教学模式，购买高级实验设备等。

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The way we use technology to overcome that is we have a lot of simulations and visualizations set up, built around in the virtual spaces.

我们用技术来解决这个问题的方法,是我们用很多模拟实验,以及直观化实验，放在模拟空间里。

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But it's not a big con, because you can set up experiments in free space far from everything, where objects will, in fact, maintain their velocity forever.

但这并不是个反例,因为你可以在一个远离一切的空间里做实验,在那里,物体可以永远保持现有速度

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