英语语法分析

It was isolated from Streptococcus agalactiae from 17.

这是从17株无乳链球菌中分离得到。

Pneumococcal disease is caused by infection with the Streptococcus pneumoniae bacterium.

肺炎球菌病是感染肺炎链球菌引起的。

Nisin is a natural food preservative produced by certain strains of Streptococcus lactis.

尼生素是由乳酸链球菌产生的一种天然食品防腐剂。