《废土余生：探索《辐射》系列的世界与人性》国产一级自拍

　　Discusses the physics, effects and defense against nuclear fallout. Describes the phenomena of natural radiation and the dangers of fallout. Explains the value of time, distance and mass in weakening the effect of residual radiation. Examines the effects of radiation on the body, food and water. Underscores adequate shelter and prescribed decontamination measures. 　　Film purports... (展开全部)