神经

例句：

1. 1. The doctor examined her nerves and found no signs of injury.
   医生检查了她的神经，没有发现任何受伤的迹象。
2. 2. The scientist studied the nervous system of the octopus.
   科学家研究了章鱼的神经系统。
3. 3. The patient's nerves were sore after the surgery.
   手术后，病人的神经很痛。