神经与血管的

例句：

1. 1. Thebrain is the central nervous system.
   大脑是中枢神经系统。
2. 2. She was nervous about her upcomingexams.
   她对即将到来的考试感到紧张。
3. 3. The nervous system controls our body's response to pain.
   神经系统控制着我们对疼痛的反应。