__________是指当距离,缩影比,照明改变的时候,知觉对象的大小,形状和颜色的相对固定性。
空间知觉中对距离判断起作用的线索主要有三种,即___________、_____________ 和___________ 。
Mr. Lessing thought both boys played very well in today's _______ match.
Although the trainer says the boys are good, Robert doesn't think he wants to become a __________ football player.