radioactive warning device

例句：

1. 1.The radiation warning device is designed to alert people to the dangers of radiation exposure.
   这个辐射警告装置旨在提醒人们注意辐射暴露的危险。
2. 2.In order to protect the public, the government has installed numerous radioactive warning devices around the city.
   为了保护公众，政府在城市周围安装了众多放射性警告装置。
3. 3. The scientists used a radioactive warning device to detect the presence of dangerous chemicals in the air.
   科学家们使用放射性警告装置来检测空气中危险的化学物质。