新华社东京8月3日电(记者华义)日本京都大学一项最新研究发现，和人类婴儿一样，日本猕猴幼崽在睡眠中也会露出自然微笑。这一发现将有助于科学家研究人类微笑的起源机制。 京都大学灵长类研究所3日发布报告...
Xinhua news agency, Tokyo, August 3 - (reporter Hua Yi) - Kyoto University, a new study found that, like human babies, Japanese monkeys in sleep will also show a natural smile. This discovery will help scientists to study the origin of human smile. Kyoto University Primate Research Institute released report 3...
