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  3. There are two basic sorts of visual perspective—aerial perspective and linear perspective. Aerial perspective—and "aerial" just

There are two basic sorts of visual perspective—aerial perspective and linear perspective. Aerial perspective—and "aerial" just

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问题     There are two basic sorts of visual perspective—aerial perspective and linear perspective. Aerial perspective—and "aerial" just means "air" or "【T1】______", not your view from an airplane! —aerial perspective is the way that the atmosphere affects【T2】______, especially distant things. I won’t try to go into the laws of physics that are involved here, but it is aerial perspective that makes a mountain in the distance appear to be a different color, that makes it seem hazier—less distinct—than closer objects. These are effects that【T3】______ attempt to reproduce carefully. And impressionists also use it to create their own special effects. Just think of many of Turner’s landscapes—or cityscapes like his "Dido Building Carthage"—to get an idea of how the air can affect what we see. The other perspective, linear perspective, is the way that things seem to get smaller the farther away they get. A classic example of this is the way we perceive【T4】______or a line of telephone poles running away from us. They seem to get smaller and smaller as they recede—until they vanish in a point on the horizon—and this point is appropriately called "【T5】______". This effect happens whenever there are【T6】______, like the two train tracks, or the tops and bottoms of the telephone poles.
【T4】
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答案railroad tracks
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