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1.The callistephin in the garden is a symbol of hope and renewal.
花园中的callistephin象征着希望和重生。
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2. The callistephin has been used for centuries to purify the air and promote health.
callistephin被使用了几个世纪来净化空气和促进健康。
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3. The callistephin was discovered by accident while searching for a rare plant.
在寻找一种罕见的植物时偶然发现了callistephin。