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近日一项研究发现，一次10秒的深情拥吻不仅传递了爱意，而且还传递了至少8000万的口腔细菌。研究人员表示，法式热吻就是短时间传递大量口腔细菌的绝佳案例。 荷兰研究人员观测了21对受试情侣的接吻行为，发现每天接吻9次的情侣共享相似唾液病菌的可能性最大。研究表明，口腔是至少700种细菌的温床。这些细菌中，还有一些具有极高的传染性。 研究人员让情侣中的一方喝下含有高识别度菌群的益生菌饮品。在接吻实验后，科学家们检测出约8000万的细菌被传到另一方的口腔里。这一切，仅用了短短10秒钟。 A single 10-second kiss can transfer as many as 80 million bacteria, according to Dutch scientists. They monitored the kissing behaviour of 21 couples and found those who kissed nine times a day were most likely to share salivary bugs. Studies suggest the mouth is home to more than 700 different types of bacteria - but the report reveals some are exchanged more easily than others. The research is published in the journal Microbiome. Locked lips A team from the Netherlands Organisation for Applied Scientific Research (TNO) asked 21 couples a series of questions to assess their kissing habits, including how frequently they had kissed in the last year and when they last locked lips. Scientists took bacterial samples from the volunteers' tongues and saliva before and after a strictly timed 10-second kiss. | 
