It starts out with a long vertical hole, known as a wellbore, drilled down through layers of sediment.

过程始于钻探一个深长的垂直孔洞，即井眼，它穿透层层。

The versions of these networked sensors used in Resead are embedded in the collars connecting sections of borehole casings, and communicate with the surface via wires. This makes them easy to deploy and use.

这些网络传感器被嵌入到井眼套管连接部的接箍中，并通过电缆与地面通信。这得它们易于部署和。

And it wasn't until I left that I realized if somebody hadn't had the foresight to sink a borewell a mile from that kid's house, she would have spent her entire day collecting water.

直到我离开，我才意识到，如果有人没有先见之明，在离那个孩子家一英里的地方打了一个井眼，她可能会花一整天的时间去取水。