The former showed the difference of Yan Fu'research focus in different life stages and the later gave a picture of the unique varieties of his thoughts.

前一个特征反映出严复思想的变化，而后一个特征使得严复思想呈现出变中不变的独特景象。

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The importance of the product life cycle to marketers is this: different stages in the product life cycle call for different strategies.

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。

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At various stages in a person's life, different kinds of life insurance are needed for particular situations.

在人生的不同阶段，特定的情况需要不同类型的人身保险。

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Mr Forster's ideal is to have two models at different stages in their life cycle sharing each plant.

ECONOMIST: General Motors and Fiat

"I used to sit and watch Elmore when I was a kid, actually all through my life, and I would see him in different stages, " Peter said.

CNN: Grit on wry: A dinner with Elmore and Peter Leonard