You must know that the formation of a traditional festival is a long-term accumulation process of the national history.

须知，传统节日的形成是一个民族或国家的历史文化长期积淀的过程。

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The study of fluid inclusions is very important in detecting the oil migration and accumulation process and the formation time of oil reservoirs.

流体包裹体在划分油气运移充注期次、确定油气藏形成时间等方面均有重要的应用价值。

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The coal accumulation process took place during their certain periods.

聚煤作用发生在特定的演化阶段。

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"It must be remembered that diversification--the selling of U.S. dollars by central banks--has been taking place consistently during the entire reserve accumulation process, " Galy said.

FORBES: Currencies

The process of making these decisions comes from an accumulation of experiences and encounters with a multitude of difference circumstances, personality types and unforeseen failures.

FORBES: The Most Successful Leaders Do 15 Things Automatically, Every Day

It said that "an accumulation of significant errors... resulted in a flawed process".

BBC: Rail line