From then on,if you accept the analysis and the assumptions or the estimates that underlie it, then we pretty much know how to construct portfolios.

如果你们理解了整个分析过程,假设前提以及各项资产的有关估算,就能知道该怎样建立一个投资组合

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but it's just like a time when they really took the care to look at how to construct things.

但它代表了一个时期，那时他们真正关注搞建筑的方法。

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