已经存在过既有黑暗也有光明的阶段，你们刚刚离开使你们沉迷于几乎全无光的水平的黑暗时代。

There have been phases of both darkness and Light, and you are just leaving the dark Ages that have taken you to levels almost devoid of Light.

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这样我们太空行走的一半时间是在完全无光线下进行的，我们头盔上的光就成了工作时必备的光源。

So half of our space walk is in complete darkness. The helmet lights are essential at the work sight.

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