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在日常生活中,可以观察到许多对称现象:美丽的蝴蝶,盛开的花朵,六角形的雪花晶体,建筑物和它在水中的倒影……
In everyday life, many symmetrical phenomena can be observed: beautiful butterflies, blooming flowers, hexagonal snowflake crystals, buildings and its reflection in the water ...