蓝图与实景交织的巍峨长城

制作一张 3:2 横向混合媒体教育海报，对比 Great Wall of China 的工程草图与真实照片。将画布垂直分割：左半部分为单色蓝图蓝工程草图，以精确建筑线条展示城墙段、烽火台、防御工事、侧视高程图和说明城墙沿地形弯曲的俯视布局；添加清晰可读的英文工程风格标注，以公制米表示城墙高度、宽度、烽火台间距和高程，若未提供来源数据集，标注应明确作为示意图数值。右半部分为高分辨率实景照片：Great Wall of China 在群山间延伸的广阔全景，自然日光照明，天空晴朗或略有云朵，色彩真实，可见石材纹理和周围景观。使用细竖线或微妙过渡分隔两侧，保持草图为蓝色、照片为自然色，不出现人物、标志、水印或虚构的历史事实。变量：measurement_unit=meters、label_language=English、aspect_ratio=3:2。默认值：measurement_unit=meters、label_language=English、aspect_ratio=3:2。

【English Prompt】
Create a 3:2 horizontal mixed-media educational poster comparing a technical sketch and a real photograph of the Great Wall of China. Split the canvas vertically: the left half is a monochrome blueprint-blue engineering sketch with precise architectural lines for wall segments, watchtowers, defensive structures, side elevation, and a top-down layout showing the wall curving along terrain; add clearly legible English engineering-style annotations for wall height, width, tower spacing, and elevation using metric meters, with labels presented as illustrative diagram values unless a source dataset is supplied. The right half is a high-resolution real photograph: a wide panoramic view of the Great Wall of China stretching across mountains under natural daylight and a clear or lightly clouded sky, with realistic colors, visible stone texture, and surrounding landscape. Use a thin vertical divider or subtle transition, keep the sketch blue and the photograph natural, and avoid people, logos, watermarks, or invented historical claims. Variables: measurement_unit=meters, label_language=English, aspect_ratio=3:2. Defaults: measurement_unit=meters, label_language=English, aspect_ratio=3:2.

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