麦迪森对人均GDP的估算，为达龙•阿西莫·格鲁、西蒙·约翰逊和詹姆斯·罗宾逊于2005年提出的重要论文提供了有用的经验核查。
His estimates of per head GDP provide a useful empirical crosscheck for a grand thesis proposed by Daron Acemoglu, Simon Johnson and James Robinson in 2005.
阿西莫格鲁、约翰逊和罗宾逊告诫人们，麦迪森有关1820年前的数据 “仅凭经验猜测”。
Messrs Acemoglu, Johnson and Robinson caution that Maddison’s figures for the years before 1820 are “no more than educated guesses”.
因此里奇维尔和卡尔上前紧逼朴智星和瓦伦西亚，即使这两位边路球员能够踢出漂亮的传中球，中路的丹恩和约翰逊也可利用人数上的优势在空中提前将威胁解除，阻止韦恩·鲁尼得到机会。
That allowedRidgewell and Carr to get tight on Park and Valencia and Dann andJohnson were always capable of repelling them in the air with WayneRooney so outnumbered in the middle.
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