传染来源 chuánrǎnláiyuán source of infection Definitions Defs Origin Strokes Stroke Words Sentences Sents 传染来源 傳染來源 chuánrǎnláiyuán source of infection A person, animal, or substance that contains an infectious agent and can transmit it directly to a host.
传染来源 傳染來源 chuánrǎnláiyuán source of infection A person, animal, or substance that contains an infectious agent and can transmit it directly to a host.
