论文部分内容阅读
你玩过a self-righting doll(/'self'raIt(?) d(?)I/不倒翁)这种小玩具吗?不管你怎么推它、摇它,它都能自己立起来哦。不信你就亲手做一个self-righting doll来玩玩吧!
Have you ever played a self-righting doll (/ 'self'raIt (?) D (?) I / tumbler?) No matter how you push it, shake it, it can stand up on its own. Do not believe you do a self-righting doll to play!