请将下面这段话翻译成英文：

宁夏枸杞

宁夏枸杞是宁夏著名的特产之一，中国地理标志产品。中医药学认为枸杞有滋肝补肾、明目的作用，含人体所需的多种营养成分，因此作为滋补药畅销国内外。中国栽种枸杞的历史十分悠久，主要分布在宁夏，内蒙古、新疆等地。以宁夏为主要产地，尤以宁夏中宁县出产的枸杞质量为最佳。

参考译文

Ningxia Wolfberry

Ningxia wolfberry, a specialty of Ningxia, is a Chinese geographical indication product. According to traditional Chinese medicine, it contains abundant nutrients that the human body needs and benefits the liver, kidney and eyes. It is well sold at home and abroad as a tonic medicine. With a long planting history in China, it is mainly distributed in Ningxia, Inner Mongolia, and Xinjiang, among which, Ningxia is the main source, especially the Zhongning County in Ningxia producing the best quality of wolfberry.

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