文化知识：岁寒三友松竹梅 Cultural knowledge: The three friends of winter, pine, bamboo, and plum blossom
松树，竹子，和梅花不畏寒冷，坚韧高洁，是中国传统文化中高尚人格的象征。
Pine, bamboo, and plum blossoms are not afraid of the cold. They are symbols of noble personality in traditional Chinese culture.
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