There are a lot of small, old dams across the  United States built to generate hydropower in a time before everyone was interconnected with  power grids.

在每个人都与电网互连之前，美国各地建造了许多小型旧水坝来发电。

They're held up by posts with a shade roof to protect the bees, and they're interconnected with a simple piece of plain wire, which goes all the way around, connecting the hives.

这些蜂巢被带有遮阳棚顶的柱子所支撑，以保护蜜蜂，用一根钢丝把它们连接起来，串联整圈的蜂巢。