reactor-down

例句：

1. 1. The reactor was shut down due to a faulty circuit.
   由于电路故障，反应堆被关闭了。
2. 2. The reactor trip occurred during maintenance.
   在维护期间发生了反应堆跳闸。
3. 3. The reactor is now being decommissioned for safety reasons.
   出于安全原因，现在正在对反应堆进行退役处理。