biswitch

例句：

1. 1. The biswitch on the door handle controls the light.
   门把手上的双开关控制着灯光。
2. 2. The biswitch is used to switch between two modes of operation.
   双开关用于在两种操作模式之间切换。
3. 3. The biswitch was designed to prevent accidental activation during heavy rain.
   双开关设计成在大雨中防止意外激活。