radsterin

例句：

1. 1.Radsterin is a type of radioactive material that can be used in medical imaging.
   放射性物质是一种可用于医学成像的放射性材料。
2. 2. The scientist discovered a new radsterin that could help cure cancer.
   科学家发现了一种新的放射性物质，可以治愈癌症。
3. 3. The radsterin was found to have a strong effect on the human body.
   这种放射性物质被发现对人体有很强的影响。