Christopher Greenslate and Kerri Leonard, high school teachers outside San Diego, were griping about the rising cost of groceries when they decided to see what life is like for the billion people on earth who spend $i a day on food. The couple's blog took off, and their book, On a Dollar a Day, hit stores in February.
展开▼
机译：圣地亚哥郊外的高中老师克里斯托弗·格林斯拉特（Christopher Greenslate）和克瑞·伦纳德（Kerri Leonard）在决定了解每天生活在食品上的十亿人的生活状况时，正为杂货成本的上涨而烦恼。这对夫妇的博客蓬勃发展，他们的书《每天一美元》（Aon a Day of a Day）在二月份上市。
展开▼
