threading switch

例句：

1. 1. The technician carefully threaded the wire through the switch.
   技术员小心翼翼地将电线穿过开关。
2. 2. The old house had a rusty, threading switch in the kitchen.
   这所旧房子厨房里有一个生锈的、接线式的开关。
3. 3.The engineer replaced the faulty switch with a new one to prevent any further damage.
   工程师用一个新的来替换了损坏的开关以防止进一步的损害。