Once it has got into the blood, it is distributed so widely that it becomes a whole-body dose of radiation.
一旦它与血液融合,便会随着血液流遍全身,全身的血液变因此含有放射性的元素。
2
When we talk about people being exposed to radiation, we use units called rems or sieverts, which measure the biological effect for whole-bodyradiation.