让: give way; give ground; yield ...它: it更: more; still more; even more富有: rich; wealthy rich in; full ...层次: administrative levels总得: must; have to; be bound to让它变得更好: make it a better place总得来说: on the whole当它变得更冷的时候: when it gets too cold更富有: be better off更富有，跟舒服: be better off更富有的: richer境况富裕；更富有: be better off变得更孤独，变得更老: getting lonely, getting old所有层次: all levels有层次的: stratified变得更长: get longer变得更聪敏: get wiser变得更聪明: become smarter变得更陡峭: steepen变得更短: get shorter变得更坏: grow worse; to become worse; worsening变得更快: brit-hop变得更老: grow older变得更暖和: get warmer
