closing of circuit

例句：

1. 1. The engineer quicklyclosed the circuit to prevent further damage.
   工程师迅速关闭电路以防止进一步损坏。
2. 2. During maintenance, the power company must ensure that allcircuits are off-circuit beforestarting work.
   在维护期间，电力公司必须确保所有电路处于断开状态后才能开始工作。
3. 3. The technician had to cut-off the power to the damaged circuitto safely remove it.
   技术人员不得不切断损坏电路的电源，以便安全地移除它。