lead-in wire

例句：

1. 1. The engineer used alead-in wire to connect the twocircuits.
   工程师使用一根导线将两个电路连接起来。
2. 2. The new car has asleek design with a lead-in wirethat runs through the center console.
   这款新车设计简洁，中央控制台上有一条贯穿的导线。
3. 3. The teacher used a lead-in wire to explain the concept of forcein physics class.
   老师用一根导线来解释物理课上力的概念。