concave mirror

例句：

1. 1. The concave mirrorreflects the sunlight beautifully.
   这个凹面镜把阳光反射得非常美丽。
2. 2. Theconcave mirror is used to focus lightonto a small area.
   凹面镜用来将光线聚焦到一个小区域。
3. 3. Theconcave mirror is often used in architecturaldesigns to create a sense of depth andspace.
   凹面镜常用于建筑设计中，以创造出深度和空间感。