广角镜头的特点:视场大、透视强,夸大可近处和远处物体间的视觉距离;景深长,拍出的照片远近清晰,便于抓拍;变形大,近距离拍摄容易失真
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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