guard cell

例句：

1. 1.The plant's ability to resist disease is largely due to its strong defense system, which includes numerous guard cells.
   植物抵抗疾病的能力很大程度上归功于其强大的防御系统，其中包括大量的保卫细胞。
2. 2. In the process of photosynthesis, these cells are constantly exposed to light and temperature changes, ensuring that the plant remains protected from harmful environmental factors.
   在光合作用的过程中，这些细胞不断暴露于光线和温度变化中，确保植物免受有害环境因素的影响。
3. 3. The function of the guard cells is to detect any changes in the environment and trigger a response to protect theplant from potential threats.
   保卫细胞的功能是检测环境的任何变化并触发响应，以保护植物免受潜在威胁。