Experts believe that exposure to more than 250msv increases the chances of a person developing cancer in their lifetime by 1%.
专家们确信，暴露在超过250毫希沃特放射量的环境下，将使一个人得癌症的几率提高1%。
2
What passes for "exposure" in the case of nonviral cancers is a combination of genes and environment and a range of other X factors that can vary from person to person.
就与病毒无关癌症而言，这种“暴露”包括了因人而异的基因、环境以及许多其他未知因素。
3
"We assume that by the age of five a person would have had at least one exposure to influenza," Katz explains.