n.象砂糖，甘味，糖质
Sugarless yoghurt could help beat bad breath, tooth decay and gum disease, say scientists.
科学家们发现,无糖酸奶有助于减轻口腔异味 、 蛀牙和牙龈疾病.
If you brush your teeth or chew sugarless gum afterward.
如果菌斑不去除,他可以导致牙龈问题和龋病.
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