For Swiss, cheese makers used propionibacterium freudenreichii.

对于瑞士奶酪而言，奶酪制造商使用的是丙酸杆菌。

Once the pore is officially clogged, it becomes a breeding ground for colonies of bacteria — especially Propionibacterium acnes.

一旦毛孔被完全堵住，它就成了细菌繁殖的温床——尤其是痤疮丙酸杆菌。