Inflatable structures achieve two out of the three – they can be quickly erected and flattened down again – but they're not very stable.

充气结构实现了三分之二——它们可以快速竖立并再次压平——但它们不是很稳定。

Hard-shell or inflatable structures may not provide the radiation protection that we need, and living underground in lava tubes doesn't quite support direct surface exploration on the planet.

硬壳或充气结构可能无法提供我们所需的 防辐射保护层，住在地下的熔岩管道里不太利于我们对 星球表面的直接探索。

Knowing that the roof will not fall in should give engineers the confidence to work on other aspects of the idea, such as how to use inflatable structures to cap the ends of a pressurised section of the tube.

知道屋顶不会塌陷应该让工程师有信心研究这个想法的其他方面，例如如何使用充气结构来盖住管道加压部分的末端。