两个好奇的小孩子在一个欢乐的操场上玩耍时，他们发现了近和远、开和关以及更多之间的不同。他们有很多乐趣，笑到停不下来！two curious kids play in a delightful playground as they discover the difference between near and far, on and off and more. they have so much ...展开>>