In body size and limb proportions it was much like modern people. Its stone-tool culture, known as the Acheulean, was typified in most regions by big, symmetrical hand axes.
Regions of the body that are most vulnerable to radiation damage include the cells lining the intestine and stomach, and the blood-cell producing cells in the bone marrow.
一些人体区域对辐射产生的破坏异常敏感，这些部位包括肠部和胃部上的细胞，还有骨髓中的造血细胞。
3
It specifies the three main regions: header, body, and tools.