After all, “availability” can be interpreted according to many criteria and thus in myriad ways: How much water? At what distance from different households (or by pipe into each house)?
毕竟，“获得”一词可以用多种标准来进行数不清的解读：多少水？与不同家庭的距离多远（还是通过水管送入千家万户）？成本几何？这些问题的决定对水的获得具有不同的影响，且它们必须随时与其他“权利”和资源用途竞争。