英语词汇natural focus infection disease怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	natural focus infection disease
释义	natural focus infection disease 简明释义自然疫源性疾病双语例句 1 Objestive: To in investigate conditions of Lyme disease and focus of natural infection in border area. 目的：调查边境地区莱姆病和自然疫源地的状况。
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