For instance, children who live on one side of the river can now attend school on the other side during the rainy season. Likewise, micro-credit schemes throughout the developing world have provided finance for the poor to expand their economic enterprise, with repayment rates that are truly impressive.
这样一个简单的工程可以极大地改变一个社区的生活。例如，居住在河的一边的小孩在雨季也可以到另一边去上学了。同理，在发展中国家普遍实施的小额信贷计划（micro-credit schemes）以非常优惠的还款利率为贫困的人们融资，使他们能够扩展经济事业。