全身性免疫疾病的准确发病原因依旧是未解之谜，但是很多科学家都相信这是遗传和环境因素综合作用的结果。
The precise cause of autoimmune diseases remains a mystery, but most scientists believe a combination of genetic and environmental factors come into play.
全身性免疫疾病的准确发病原因依旧是未解之谜，但是很多科学家都相信这是遗传和环境因素综合作用的结果。
The precise cause of autoimmune diseases remains a mystery, but most scientists believe a combination of genetic and environmental factors come into play.
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