你口腔中的细菌靠你牙齿里残留食物的糖分和淀粉存活。
Bacteria in your mouth feed on sugars and starches that remain on your teeth after eating.
短短一小时，已足够让牙垢膜细菌把糖份及淀粉质转化为有害的酸性物质，侵蚀珐琅质。
In just one hour, plaque bacteria will start converting sugar and starch particles into harmful acids that attack the tooth enamel.
在糖或淀粉的存在，细菌产生的酸，攻击牙齿珐琅质。
In the presence of sugars or starches, the bacteria produce an acid that attacks the tooth enamel.
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