That area will be radioactive for a long, long time.
Francium is a "radioactive" element.
Uranium is naturally radioactive.
The X-Ray machine is radioactive
Cancer usually requires some form of radioactive treatment, such as one of the most infamous methods, chemotherapy.
You can just put something in the sentence that is going to be radioactive that's all.
You have to use a microscope to see the radio active fuel
"The radioactive decay of certain unstable isotopes is used to calculate the age of objects."
"Marie Curie was a pioneer of radioactive research".
You can use the word Truss in a sentence like this.
Can you use the word concluding in a sentence? Done.
Just use it! Or do you mean, can you use the word beheld in a sentence.
Here is an example sentence with the word "catastrophe":The Chernobyl disaster was truly a catastrophe, 350400 people had to evacuate from their homes and thousands suffered from radioactive related diseases.