If the "Outof Africa" hypothesis is right, that decreasing variability should be reflected in skull shape-since this is ultimately under genetic control.
如果“走出非洲”说是正确的，那么趋同性应该在头骨上有所体现——因为它主要是由基因控制的。
2
When the software is fed a magnetic-resonance image of an injured skull with some bones struck out, it generates patient-specific designs to fill in the missing bits.
当给该软件提供剔除一些骨骼的受伤颅骨核磁共振成像时像时，它就可以产生特定的设计来填充缺失的像素。
3
The precise order can be worked out from the direction of fractures on his skull: when bone breaks, the cracks veer towards existing areas of weakness.