今天的模拟在概念上是相似的，但有一个关键的区别：陆军分析师的图是静态的，人工绘制和分析。

Today's simulations are similar in concept, but with one crucialdifference: the Army analysts' diagram was static, constructed by hand andanalysed manually.

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中期1942年，他投入了大量的普拉特，立百基飞机公司，建筑的美陆军第一直升机的XR - 1(图2)。

By mid-1942 he had invested substantially in the Platt-LePage Aircraft Corporation, builders of the US Army's first helicopter, the XR-1 (Fig. 2).

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波尔图警告我们，击败中央陆军不是容易的事情。

We were warned by Porto that CSKA were a difficult side to beat.

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