translation.en: There are 12 pairs of 50:1 reductions, so that means that the final speed of that gear on the end is so slow that it would take two trillion years to turn once.
translation.zh: 这里一共有12对50:1的减速装置 所以这意味着终端齿轮的最终速度 是非常的慢，它需要20兆年才能转一圈