Radioactive elements are produced in nature and scientific experiments.

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.

His language contains many ejective sounds.

He is a very excellent tailor.

This area is off-limits due to radioactive contamination.

Sufficient caution is necessary when handling radioactive materials.

He deeply believes in the principles of socialism.

He is an expert in sociology.