His language contains many ejective sounds.

This area is off-limits due to radioactive contamination.

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.

I will go out for company business today.

He showed deep gratitude.