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2709 240x400 roof, buildings, city
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2695 240x400 roof, architecture, backlight
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2655 240x400 roof, building, architecture
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2462 240x400 roof, mesh, architecture
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2365 240x400 roof, pipes, ceiling
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2357 240x400 roof, circle, relief
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2191 240x400 roof, building, relief
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2147 240x400 roof, structure, sky
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2005 240x400 roof, architecture, sky
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1958 240x400 roof, lines, intersections
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1867 240x400 roof, architecture, relief
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1785 240x400 roof, glass, lines
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1755 240x400 roof, architecture, beijing national stadium
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1731 240x400 roof, ceiling, architecture
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1570 240x400 roof, arch, pattern