The radiation dose in this area exceeds the safety standards.

He measured the amount of radiation using a radiation dosimeter.

Ejective, or 'houshutsuon' in Japanese, is one of the phonetic features used in certain languages.

This area is seriously contaminated with radioactive isotopes.

This rock is radioactive, so care must be taken when handling it.

Radioactive elements are produced in nature and scientific experiments.

He started attending at the hospital.

The radiation dose in this area exceeds the safety standards.

Let's use a radiation dosimeter to measure the radiation levels in this area.

Every Saturday, I do volunteer work at the local library.