shadow-tuning indicator

例句：

1. 1. The shadow tuning indicator is used to measure the amount of light that enters a room.
   阴影调谐指示器用于测量进入房间的光线量。
2. 2. The shadow tuning indicator was designed to help people with visual impairments navigate their surroundings more easily.
   阴影调谐指示器旨在帮助视力受损的人更容易地导航周围环境。
3. 3. The shadow tuning indicator is essential for maintaining good lighting conditions in a classroom.
   阴影调谐指示器对于保持教室良好的照明条件至关重要。