CAMBRIDGE – The promise that each generation will be better off than the last is a fundamental tenet of modern society. By and large, most advanced economies have fulfilled this promise, with living standards rising over recent generations, despite setbacks from wars and financial crises.
美国剑桥—每一代人都能过得比上一代人更好，这是现代社会的一个基本信条。总的来说，大部分发达经济体都兑现了这一承诺，最近几代人的社会标准一直在提高，尽管战争和金融危机也会带来一些倒退。