We need a two-way switch.

我们需要一个双路开关。

youdao

Can you explain to us how a two-way switch works?

你给我们解释一下双路开关的工作原理好吗？

youdao

The main panel part comprises a sample holder arranged at the upper part of the panel, and a two-way switch, wherein the upper end of the sample is fixed on the sample holder by a fixing clamp.

主面板部分包括面板上方安装的样品架，样品上 端通过固定夹固定在样品架上，面板上同时安装有一个双向开关。

youdao

But the phone companies have a two-way switch network, which is underrated.

FORBES: Larry Ellison

Along the top edge, you'll find the e-ink display and a two-way power switch -- slide it to the left and Ruby behaves like a secure hotspot, slide it to the right and it's a public access point.

ENGADGET: Topic: Mobile