Because they're on the pellicle of the teeth, these bacteria come into contact with sucrose, a sugar found in various foods and drinks including table sugar.

因为它们位于牙齿表面薄膜，会很容易接触到蔗糖，很多食物和饮料中都含蔗糖。

Normally, there's a layer called the pellicle that covers the tooth, and bacteria in the mouth, like viridans group streptococci, settle on that pellicle layer.

正常情况下，牙齿被薄膜包裹，口腔中的细菌，例如草绿色链球菌，定植在这层薄膜上。