粒子物理界现在正为一则消息而喧闹不已，那就是美国唯一的粒子物理实验室的研究者们似乎发现了一种之前从未见过的诡异粒子。
The particle physics world is abuzz with the news that researchers at the United States's sole particle physics lab may have spotted a weird particle unlike any seen before.
这些发现可能说明灵长目进化及变种的过程很长，这是之前没有考虑到的。但是研究者们声称在非洲早些时候的这些位置并没有出现类人猿。
The findings might suggest these primates spent far more time evolving and diversifying than before considered, but the researchers contend that anthropoids seem absent at earlier sites in Africa.
为了评估志愿者成长环境的影响，研究者根据志愿者15岁之前在大城市，城镇或者农村生活时间的长短，为每个人制定了一个大城市指数。
To assess any effect of where the volunteers grew up, the researchers assigned each an "urbanicity" score based on how many years they'd spent by age 15 in a city, town or rural area.
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