However, we will not establish self sustaining colonies in space for at least the next hundred years.

然而 至少在未来的一百年里 我们不会在太空中建立自给自足的殖民地。

Your environment is creative in that trees bear fruit, that there is a self sustaining principle, that the earth feeds its own, for example.

你的环境是创造性的，因为树木结出果实，有一个自我维持的原则，例如，地球养活自己。