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There is nothing as romantic as two lovers sharing a kiss. 恋人之间相互接吻是一件多么美妙浪漫的事情啊。 But scientists have come up with an evolutionary explanation which perhaps threatens to kill the passion. 但是科学家们最近根据进化理论做的一项研究结果可能会让接吻听起来没有那么浪漫了。 Academics think that kissing helps partners share bacteria, shoring up their immune systems and enabling them to better fight disease. 科学家们发现接吻有助于双方分享细菌，增强免疫力，并能够帮助双方更好地抵御疾病。 As many as 80 million bacteria are transferred during a ten-second kiss, according to Dutch biologists. 荷兰的生物学家称，仅仅接吻10秒钟就能传播8000万个细菌给对方。 Humans carry trillions of bacteria in the body, which together make up a ‘microbiota’ – a complex mix of bugs which play a crucial role in digesting food and warding off infections. 其实我们每个人体内都携带有数以万计的细菌，这些细菌组合在一起就形成了“菌群”，这些“菌群”在消化系统和免疫系统中发挥着至关重要的作用。 Remco Kort, from the Netherlands Organisation for Applied Scientific Research - or TNO - said his team set out to discover the evolutionary reason for kissing. 荷兰应用科学研究组织的雷姆科·科尔特和他的团队已经开始从进化论方面探索接吻的原因。 | 
