Radioactive materials — if handled improperly — or radiation accidentally released into the environment, can be dangerous because of the harmful effects of certain types of radiation on the body.

如果由于处理不当导致核物质或辐射不慎泄漏到环境中，将会非常危险，因为有些辐射对人体会造成有害影响。

youdao

Nuclear medicine - USES radioactive tracers which can be administered to examine how the body and organs function, for example the kidneys or heart.

核医学-使用放射性示踪剂，可管理，研究如何身体和器官的功能，例如肾脏或心脏。

youdao

For example, some container assemblies of the invention include a body and a lid both including radiopaque material, and together defining a receiving space for radioactive material.

例如，本发明某些容器组件包括本体和盖，均包括射线透不过的材料并一起限定了放射性材料的容纳空间。

youdao

Some medicines,like Prussian blue pills, can help expel radioactive elements from the body.

VOA: special.2011.03.30

One concern raised by such contaminants is that chemically, radioactive and non-radioactivie iodides are too similar for the body to tell apart, thus raising the risk that radioactive iodides can accumulate and lead to further health risks.

FORBES: Researchers Develop Material to Remove Radioactive Contaminants From Drinking Water

Most of the radioactive iodine leaves your body in your urine in the first few days after treatment.

CNN: Thyroid cancer