求翻译：汪迪良发现，很多病人患上白血病后，需要昂贵的治疗费用，且治愈率较低。从1990年起，他就开始专注研究白血病。终于发明了治疗白血病的中药制剂。2006年，汪迪良获得国家专利。是什么意思？

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Wang Di discovered good that, after very many patients suffer from the leukemia, needs the expensive treatment expense, also the cure rate is low.From 1990, he starts the dedicated research leukemia.Finally invented has treated the leukemia the Chinese native medicine preparation.In 2006, Wang Di ob

Wang Diliang found that after many patients suffering from leukemia, requiring expensive treatment cost, and the low cure rates. From 1990 onwards, he began to focus on leukemia. Finally invented the leukemia treated by traditional Chinese medicine preparation. In 2006, Wang Diliang obtained nationa