灰白质

例句：

1. 1. The gray matter is responsible for processing sensory information from the senses.
   灰质负责处理来自感官的信息。
2. 2. The gray matter is also involved in memory and learning.
   灰质还涉及记忆和学习。
3. 3. The gray matter is found in the brain's cortex, where it helps to process sensory information.
   灰质存在于大脑皮层中，帮助处理感官信息。