14-07-10 One of us hides our eyes and then slowly reveals them, which causes peals of laughter from a baby. This game is called peekaboo . 遮住双眼，手再缓缓移开，这样的动作会把婴儿逗得咯咯笑。这种游戏就叫躲猫猫。 An early theory of why babies enjoy peekaboo...