noise-free light

例句：

1. 1. The hospital uses noise-free lights to help patients sleep.
   医院使用无噪声灯帮助病人入睡。
2. 2.The new design of the room features noise-free lighting that is perfect for studying.
   房间的新设计采用了无噪声照明，非常适合学习。
3. 3. The office now has a noise-free light system installed to reduce distractions for employees.
   办公室安装了无噪声照明系统，以减少员工的分心。