一種不知名的細菌感染。這種細菌平時各處都有,但通常狀況下根本侵染不了人,不能致病。但抵抗力弱的時候,成了致死細菌
一種不知名的細菌感染。這種細菌平時各處都有,但通常狀況下根本侵染不了人,不能致病。但抵抗力弱的時候,成了致死細菌
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