reaction centre

例句：

1. 1. The reaction center of the cellis responsible for controlling the flow of chemicals.
   细胞的反应中心负责控制化学物质的流动。
2. 2.The scientist discovered a new receptor center inthe brain that could help with memory.
   科学家在大脑中发现了一个新的受体中心，可以帮助记忆。
3. 3. The researchers found that the receptorcenter plays a crucial role in the body's response to stress.
   研究人员发现，受体中心在身体对压力的反应中起着关键作用。