The police used tear gas against the demonstrators.

He knows how to defuse a bomb.

The police found a car rigged with a bomb.

He likes to take a walk in the park at dusk.

He was able to turn his designs into physical form using his new 3D printer.

I made a small robot with my new 3D printer.

Vitamin D3 is an important nutrient for bone health.

Please calculate the area of this right triangle.

He received training as a grenadier.

He was seriously injured by the impact of the shrapnel.