英汉词典

1. 模糊形状；模糊的区域
    A blur is a shape or area which you cannot see clearly because it has no distinct outline or because it is moving very fast.

    e.g. Out of the corner of my eye I saw a blur of movement on the other side of the glass...
           从眼角余光中我看到玻璃的另一边隐约有东西在移动。
    e.g. Her face is a blur.
           她的脸模糊不清。

2. （使）变得模糊不清
    When a thing blurs or when something blurs it, you cannot see it clearly because its edges are no longer distinct.

blur的反义词

    e.g. This creates a spectrum of colours at the edges of objects which blurs the image...
           这在物体的边缘形成了一道色谱，使图像变得模糊不清。
    e.g. If you move your eyes and your head, the picture will blur.
           如果你的眼睛或头动了，图像就会变得模糊不清。