nervous breakdown

例句：

1. 1. She was so nervous aboutthe test that she couldn't focuson the material.
   她对考试感到如此紧张以至于无法集中注意力。
2. 2. The driver's nerves wereshot after the accident.
   事故后，司机的神经已经崩溃。
3. 3. He hada nervous breakdown after the stress of thejob.
   工作压力使他神经崩溃。