brightness fluctuation

例句：

1. 1.The camera's brightness fluctuation is causing the image to be blurry.
   相机的亮度波动导致图像模糊。
2. 2. The sudden brightness fluctuation in the sky caused us to squint.
   天空突然的亮度波动让我们眯起了眼睛。
3. 3.The fluctuation of the brightness in the room made it difficult for me to focus on the screen.
   房间里亮度的波动让我难以聚焦在屏幕上。