visual variable

例句：

1. 1. She was able to see the painting clearly because she had a good eye for detail.
   她能够清晰地看到这幅画，因为她对细节有很好的洞察力。
2. 2. The scientist used a microscope to visualize the structure of the cell.
   科学家使用显微镜来可视化细胞的结构。
3. 3.The teacher explained the concept of visual memory in detail.
   老师详细解释了视觉记忆的概念。