translation.en: But those sites have now been leapfrogged and leapfrogged again, as we've just continued to sprawl, and they now have a relatively central location.
translation.zh: 但这些地方已经成了孩子们 玩跳蛙游戏的地方， 而我们只知道再接着像更远的地方延伸． 现在这些地方 已相对是中心的地带了．