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The purpose of looking down on the economy from the macro vantage point is that it allows us to see, more clearly than from ground level, a process of crucial and central importance. This is the ceaseless activity of production on a national scale, the never-ending creation and re-creation of the wealth by which the country replenishes and renews and expands its material life.之所以要从宏观角度俯瞰经济，是因为居高临下能让我们看到一个至关重要的过程，一个从近距离看不到的过程。这就是国家范围内永不停息的生产活动，即财富创造和再创造的过程。一个国家正是借此补充、更新、扩展其物质生活。

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The “excepted risks” are war, hostilities, ...civil war, or unless solely restricted to employees of Contractor or of his subcontractors and arising from the conduct of the Works, riot, commotion or disorder, or...“意外风险”包括战争、敌对……内战，或在工程进行中，由承包商的雇员、分包人制造的动乱、混乱……

And then he seemed to discern in her something that was familiar, something which carried him back into a joyous and unforeseen past, before the necessity of taking thought had made the heavens gray.他似乎在她身上了解到一些他所熟悉的东西，这些东西使他回忆起欢乐的不能预知未来的过去，回忆起从前顾虑重重天空昏暗的日子。

Nothing is more apt to remind philosophers and statesmen of the need for modesty than the history of the French Revolution, for no event was greater or longer in the making or more fully prepared yet so little anticipated.最能让哲学家、政治家感到应谦虚谨慎的莫过于法国大革命的历史，因为没有任何事件比这场革命更波澜壮阔，更长久酝酿，更充分准备，然而却又未能预料。

In this paper, the frictional torques exerted on the blades of turbine flowmeters are theoretically analyzed in some detail by means of boundary layer theory. A formula for calculating frictional torques is thus obtained.本文应用边界层理论，从理论上相当详细地分析了作用于涡轮流量计叶片上的摩擦力矩，从而得出了计算摩擦力矩的公式。