noun 下载 🔗分享 链球菌 A spherical, gram-positive bacterium of the genus Streptococcus. Although commonly found benignly in the human mouth and gut, and though many species are non-pathogenic, other species can cause diseases including strep throat and more serious conditions. Examples : "My doctor suspects I have strep throat because the culture came back positive for Streptococcus. " 我的医生怀疑我得了链球菌性咽喉炎,因为培养结果显示链球菌呈阳性。 medicine biology organism microorganism disease science 与AI对话词汇游戏阅读练习