For sub-Saharan Africa, the statistics are even more staggering; in most cases, 60 to 70 per cent of national populations live on less than a dollar a day, while life expectancy at birth is less than 50 years.
在撒哈拉以南非洲，统计数字甚至更加惊人；在多数情况下，全国人口的60％至70％每天的生活费不到1美元，出生时预期寿命不到50岁。