In this case, he chooses the Angle that makes down-sloping planes look like up-sloping planes.
在本例中，他选择了让下坡面看上去像上坡面的角度。
And according to expert calculations, the Angle at which our big heads look down forces our spine to bear the weight of approximately 60 pounds.
而据专家测算，我们的头向下看的角度迫使我们的脊柱承受了大约60磅的重量。
Many people tilt the glass at a forty-five degree Angle and look down through the wine where it is not very deep against the glass.
很多人将酒杯倾斜45度，从浅的地方看下去。同时在下面放置一个白色背景会让你看得更容易一些。
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