spark plug centre rod

例句：

1. 1. Theengine needs to be replaced with a newspark plug centre rod.
   发动机需要用新的火花塞中心杆来替换。
2. 2. The mechanic inspected the spark plug centre rod and foundit to be in good condition.
   机械师检查了火花塞中心杆，发现它状况良好。
3. 3. The car's performance wassignificantly improved after the spark plug centre rodwas replaced.
   更换火花塞中心杆后，汽车的性能显著提升。