Arnold's nerve

例句：

1. 1. She was so nervous about the test that she couldn't sleep the night before.
   她对考试非常紧张，以至于考试前一晚都没能入睡。
2. 2.The doctor advised him to take a break from his work and relax his Arnold's nerves.
   医生建议他休息一下，放松一下他的神经。
3. 3. Arnold's nerves were so taut that he could hardly move.
   阿诺德的神经绷得紧紧的，他几乎动弹不得。