speed of photographic plate

例句：

1. 1. The speed of the camera is crucial for capturing high-quality images.
   相机的速度对于捕捉高质量图像至关重要。
2. 2. The photographer needs to adjust the speed of the shutter to match the light conditions.
   摄影师需要调整快门速度以匹配光线条件。
3. 3. The film's speed determines how long it will last in the dark.
   胶片的速率决定了它在黑暗中能持续多久。