The third turning point in this sequence is technological: national estimates of cereal crop productivity show how, after decades of stagnation during the Asian green revolution, African yields have grown steadily over the past decade, so that estimated cereal grain output per capita now equals that of South Asia.
第三是技术转机： 对谷类作物产量的国家评估表明在亚洲绿色革命数十年的停滞之后，十年来非洲是怎样实现了产量的稳步增长，非洲现在的人均预计谷物产量几乎与亚洲的水平相当。