We might even encounter an alien type II civilization long before we achieve that level ourselves.

我们也许甚至会在自己远未达到第二阶段水平时就遇到了那个阶段的外星文明。

youdao

We might even encounter an alien type II civilization long before we achieve that level ourselves.

我们也许甚至会在自己远未达到第二阶段水平时就遇到了那个阶段的外星文明。

youdao