中枢

例句：

1. 1. The brain is the central nervous system.
   大脑是中枢神经系统。
2. 2. The company's headquarters are located in the heart of the city.
   公司的总部位于市中心。
3. 3. The project was a success because it focused on the central issue.
   这个项目成功了，因为它专注于中心问题。