collective dose

例句：

1. 1.The study found that the collective dose of radiation from the nuclear power plant was too high.
   研究发现，核电站的辐射总剂量过高。
2. 2.The researchers have calculated the collective dose of radiation exposure for all the workers involved.
   研究人员已经计算了所有参与工人的辐射暴露总量。
3. 3.The government has decided to implement a new policy to reduce the collective dose of pollution in the city.
   政府决定实施一项新政策，以减少城市中的污染总量。