translation.en: And then in a series of 55 balls, it reduces, proportionately -- each ball and the spaces between them reduce proportionately, until they get down to this little Earth.
translation.zh: 然后是一系列的55个球， 每个球都按一定比例缩小， 每个球和其之间的距离也 按比例缩小， 直到最后这个最小的球。