这在物体的边缘产生了一系列颜色，使图像变得模糊不清。
This creates a spectrum of colours at the edges of objects which blurs the image.
视图可能阴沉而朦胧，如果浮油区域靠近图像边缘的话，则会显得模糊。
The view may be cloudy or hazy, and if the oil slick location is near the edge of the image, it will be blurry.
如此便为图像边缘添加了模糊效果。
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