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Because in a certain sense what culture is, is the accumulation of ideas.
就某种意义而言，所谓文化就是观念的累积。
youdao
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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。
youdao
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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。
youdao