Before we leap into an explanation of the next two valuation techniques, we should be grounded in a few concepts regarding valuation models.

在我们进入对下两个评估技术的解释前，我们应该先了解一些关于评估模型的概念。

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So far in 2010 we have had two ValuEngine Valuation Warnings.

FORBES: Time To Book Profits On Overvalued Dow Components

Any exchange rate is a relative valuation of two currencies.

ECONOMIST: Currencies

So, without any information or signals out of Apple, whether or not to buy on Monday depends on two criteria: valuation versus downside risk and an assessment (WAG) if Apple has anything up their sleeves for the earnings call.

FORBES: Do I Buy Apple On Monday?