switch contact

例句：

1. 1. The circuit board has a switch contact that can be used to turn on and off the light.
   电路板有一个开关接触点，可以用来打开和关闭灯光。
2. 2.The engineer found a switch contact that was causing the circuit to fail.
   工程师发现一个开关接触点导致电路故障。
3. 3. The technician had to replace the switch contact in order to fix the problem.
   技术人员不得不更换开关接触点来解决问题。