Table manners change over time. They follow the fashion the day.

餐桌礼仪随着时代的变化而变化. 它们有着时代特点.

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Why do accounts of the same event differ and change over time?

为什麽同一桩历史事件的叙述会有所不同?并且随著时代还会有所更变?

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They are relayed to experience and practice and may change over time.

他们被用于近似地替代经验、实践以及过去的许多变化.

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Mark: But people change over time.

马克: 可是人时时都在变.

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Paradigms change over time, and so must you.

世事无常, 你要顺势而为.

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Macroeconomists observe that economies differ from one another and that they change over time.

宏观经济学要观察时常变化的经济.

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