In this section, we discuss XML Schema extensibility options so you can compare and contrast design alternatives.

这一节讨论XML Schema的可扩展性选项，从而可以比较不同的设计方法。

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Once again - this is all about maintaining contrast in your design.

再次说明，这都是关于在你的设计里面保持对比。

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Contrast is the value difference between the colors on your design.

对比是指在你的设计里面，颜色之间的明度不同。

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Equal in excellence to the 264-seat main theater but presenting a striking design contrast, this secondary screening room has a hot pink entrance and features exposed loudspeakers and a grey, perforated acoustical wall and ceiling surface, making it more of an exposed machine for the moving image.

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Following other popular L-Series phones, such as the Optimus L3, L5 and L7 that were released globally earlier this year, all L-Series phones are designed around five primary aesthetic elements: Modern Square Style for comfortable grip, Floating Mass Technology for a slimmer look, Seamless Layout for a more intuitive arrangement of keys, Harmonized Design Contrast utilizing metallic accents and Sensuous Slim Shape that naturally draws the user's attention.

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But what his followers do and what Sadr says are often in stark contrast, whether by design or by a failure of leadership.

NPR: American Raid Follows Sadr's Return to Public Eye