The closer building looks larger than the farther one, but it's just an optical illusion. The two buildings are actually the same size.近处这栋楼看上去比远处那栋高大，其实这只是视错觉。这两栋楼实际上大小一样。The magician did the trick with mirrors.魔术家变这套戏法利用的是镜子造成的视错觉。Sloping walls on the bulk of the building create an optical illusion.大楼主体的斜墙给人造成一种视错觉。The road ahead looks wet, but in fact this is an optical illusion.前方的路面看上去湿漉漉的，但实际上那只是视错觉。