translation.en: That's why it is possible to use existing solar cells on the roof of a hut to act as a broadband receiver from a laser station on a close by hill, or indeed, lamp post.
translation.zh: 这就是说，屋顶上那些现有的太阳能电池 可以用来作为宽带网络的接收器 信号可以来自靠近山坡的 激光站，或者街边的路灯