一位蹒跚学步的孩子用脚踩住了地面飘动的彩纸,他弯下腰用手拽起彩纸。可是,怎么也拉不动,原来,踩纸的脚还没松开呢!孩子不明白:怎么到手的彩纸就是得不到呢?他想松开脚,然而他更担心:一旦松开脚,彩纸不又飞走了吗?但是,不松开脚,想得到彩纸怕是有点不可能。 A toddler sits with his feet on the fluttering colored paper, and he bent down and grabbed the colored paper with his hands. However, how can not pull fixed, the original, the paper has not let go of the foot it! Children do not understand: how the hand of colored paper is not got it? He wanted to release the foot, but he is more worried: once you release the foot, Do not fly away the colored paper it? However, do not let go of your feet, want to get the color paper afraid it is a bit impossible.