HINTS:

十以上数字、年份、百分率、金额等都用阿拉伯数字表示，数字采用千位逗号隔断

Dental Research
Sugarless yoghurt could help beat bad breath, tooth decay and gum disease, say scientists. Japanese researchers found eating the yoghurt reduced levels of hydrogen sulphide, a major cause of bad breath, in 80% of volunteers. The key are active bacteria in yogurt, specifically Lactobacillus bulgaricus and Streptococcus thermophilus. Details were presented at a meeting of the International Association for Dental Research. A total of 24 volunteers who took part in the study were given strict instructions on oral hygiene, diet and medication intake. They spent two weeks avoiding yoghurts and similar foods, like cheese.
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。 日本研究者们发现多喝酸奶可以减少80%的受试者体内的硫化氢含量，而硫化氢是口腔异味的主要诱因。 酸奶有助于缓解口臭的关键在于酸奶里的活性细菌，尤其是乳酸菌和喜温的链球菌。 详细的研究结果是在国际牙科研究协会的一次会议上公布的。 共有24名志愿者参与了这项研究，研究者们在口腔卫生、饮食和药物服用等方面对他们提出了严格的要求。 他们在两周内禁食酸奶和奶酪等类似食物。