faulty circuit

例句：

1. 1. The circuit board is the main component of the electronic device.
   电路板是电子设备的主要组件。
2. 2. The faulty circuit caused a power outage in the area.
   故障电路导致该地区断电。
3. 3. To fix the faulty circuit, we need to replace the damaged components.
   为了修复故障电路，我们需要更换损坏的组件。