产品生命周期对营销人员的重要性在于：在产品生命周期的不同阶段需要采取不同的策略。
The importance of the product life cycle to marketers is this: different stages in the product life cycle call for different strategies.
该律师函强调了苹果应用商店对其移动策略的重要性，并且表明苹果将其门面作为区分其与其他竞争者的方式之一。
The letter highlights the importance of Apple's App Store to its mobile strategy and how much it views the storefront as a way to differentiate itself from competitors.
让我解释一下它对事务策略的重要性(和必要性)。
Let me explain why this is so important (and necessary) for this transaction strategy.
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