* @param arr 数组
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Inside the stamp, the entire surface is filled with monochrome dark illustrations etched into the background like fine engraving. The illustrations must depict 5–8 of the most universally iconic and recognizable objects, characters, vehicles, symbols, and locations from [MOVIE] — chosen specifically because anyone who has seen the film would instantly recognize them. All arranged loosely across the full width of the stamp with generous spacing. Detailed technical engraving style — only outlines and fine internal linework, no fills, high contrast against the background.，这一点在同城约会中也有详细论述