短语词组短语Plant pathogens 植物病原体;植物病原菌Opportunistic pathogens 性致病菌;机会致病菌;微生物;条件致病菌emerging pathogens 病原体Pathogens distribution 菌群分布Individual Pathogens 个体病原体STD pathogens STD 病原体periodontal pathogens 牙周致病菌 返回 pathogens