We would likely need several Earths worth of highly reflective material like hematite to construct the full system — plus a few more dismantled planets to make a legion of construction robots.

我们很可能需要相当于几个地球储量的，如赤矿石这样的高反光材料来建造整个系统——再加上几个被拆卸了的星球，以组建一支机器人施工军团。