1. relating to or caused by streptococci. 
   关于或由链球菌引起的。
2. any of several hemolysins derived from strains of streptococcus. 
   来自链球菌系的溶血素。
3. an infection of the oral pharynx and tonsils by streptococcus. 
   由于链球菌所导致的喉咙扁桃体感染。
4. A nonmotile, gram-positive bacterium(Streptococcus pneumoniae) that is the most common cause of bacterial pneumonia, associated with meningitis and other infectious diseases. 
   肺炎球菌一种非游走的革兰氏阴性细菌（肺菌链球菌），是细菌性肺炎最常见的致病原因，并与脑膜炎和其它传染性疾病有关
5. An antibiotic, C54H90N6O18, produced by the actinomycete B Streptomyces fulvissimus, that increases the transport of potassium across cell membranes. 
   缬安霉素一种抗生素，c54h90n6o18，由链球菌属放射性菌类b产生，促进钾穿过细胞膜的传送

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