论文部分内容阅读
马戏团里,大象爷爷和小象孙子要给大家表演“顶球”。大象爷爷用大球表演,小象孙子用小球表演,而且大象爷爷和小
Circus, grandfather elephant and elephant grandson to show everyone “top ball ”. Elephant grandfather performance with a big ball, baby grandson with a ball performance, but also the elephant grandfather and small