These bacteria, however, also play a protective role.Ordinarily our tongues harbor the yeastlike Candida fungus in small numbers, the population kept in check by the presence of bacteria.

• 只是这些细菌也会保护我们，因为舌头通常会有少量类似酵母的念珠菌属真菌存在，它的族群数目就是靠这些细菌来控制。