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1.The penumbra region is where the light from the sun filters through the atmosphere, creating a hazy effect.
光晕区域是太阳光线透过大气层时形成的朦胧效果。
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2. In photography, the penumbra region is used to create a soft, blurred background.
在摄影中，光晕区域被用来创造柔和、模糊的背景。
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3. The penumbra region can also be used to describe the area around a light source where its light is not as strong as in the main area.
光晕区域还可以用于描述光源周围的地方，那里的光线没有主区域那么强烈。