photochromics

例句：

1. 1. The new glasses have a unique photochromic coating that changes color with thelight.
   这些新眼镜有一个独特的光致变色涂层，可以根据光线改变颜色。
2. 2. The scientistdiscovered a photochromic substance that reacts with UV light to change color.
   科学家发现了一种光致变色物质，它与紫外线反应以改变颜色。
3. 3. The company isdeveloping photochromic materials for use insun protection applications.
   该公司正在开发光致变色材料，用于防晒应用。