Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.
期刊简介《国际组织》(International ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.
两家分析机构的专家透露,中国正在四川绵阳建设一座大型“核聚变点火”研究中心,预计会是全球最大的同类设施,并可能在核武器设计与能源开发领域发挥重要作用。 路透社报道,美国独立研究机构CNA的研究员伊夫莱斯(Decker ...