The red stingray lives at the bottom of the sea.

I got a failing grade in math.

He is studying the history of the Soviet Union.

He drew a red tile and expressed great joy.

He is a complete stranger to me.

This camera has a function to detect infrared.

He crossed the road ignoring the red light.

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

This mountain is made of diorite.

It is said that green flower vegetables, a synonym for broccoli, are rich in vitamin C and good for health.