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Each has a different theme and the individual photos within the series share similar tones.

每一系列有不同的主题，同一系列的每幅图片都有相似的基调。

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The article further refines what has been an ongoing theme for the series: Modeling is about simplifying reality for practical purposes.

本文进一步升华了贯穿本系列文章的一个主题：建模是出于特定目的而对现实的简化。

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Clinton has a series of theme events in Mumbai highlighting bilateral cooperation in such areas as business, education,and women's empowerment.

VOA: standard.2009.07.17

And then there's Sony Pictures Television, which sent out a Joan of Arcadia box that not only played the series' theme song upon opening, but also featured a live tree, which was prominent in the provided episode.

FORBES: A War For The Emmy

His innovative method can be heard on the theme tune to the 1962 series The Beverly Hillbillies.

BBC: Banjo musician Earl Scruggs dies aged 88

In response to complaints, Bioware's Mr Hudson said the "underlying theme of sacrifice" throughout the series as reflected in the ending.

BBC: Mass Effect campaign demands new ending to series