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.
例句
Out of the corner of my eye I saw a blur of movement on the other side of the glass...從眼角余光中我看到玻璃的另一邊隱約有東西在移動。Her face is a blur.她的臉模糊不清。
V-ERG
（使）變得模糊不清
When a thing blurs or when something blurs it, you cannot see it clearly because its edges are no longer distinct.
例句
This creates a spectrum of colours at the edges of objects which blurs the image...這在物體的邊緣形成了一道色譜，使圖像變得模糊不清。If you move your eyes and your head, the picture will blur.如果你的眼睛或頭動了，圖像就會變得模糊不清。
VERB
使（想法、區別等）模糊；使（想法、區別等）不明晰
If something blurs an idea or a distinction between things, that idea or distinction no longer seems clear.
例句
...her belief that scientists are trying to blur the distinction between 'how' and 'why' questions...她認為科學家們試圖模糊“如何”和“為什么”這兩類問題之間的區別The evidence is blurred by central banks' reluctance to reveal their blunders.由于中央銀行不愿意公開自己的愚蠢錯誤，證據并不清楚。
V-ERG
（使）（視力）模糊；（使）看不清楚
If your vision blurs, or if something blurs it, you cannot see things clearly.
例句
Her eyes, behind her glasses, began to blur...她藏在眼鏡后面的雙眼變得模糊起來。Sweat ran from his forehead into his eyes, blurring his vision.汗水從額頭流到了眼睛里，模糊了他的視線。
英英詞典釋義
Adjective
1. indistinct or hazy in outline;
"a landscape of blurred outlines""the trees were just blurry shapes"
2. unclear in form or expression;
"the blurred aims of the group""sometimes one understood clearly and sometimes the meaning was clouded"- H.G.Wells