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

This is my unused camera.

He was prescribed an antidepressant.

He was prescribed antidepressants by his doctor.

I repaired the broken vase using instant glue.

I spray deodorizer in my room every day.

This detergent contains a high-quality surfactant.

This rocket is using a new type of combustion agent.

He is taking sedatives to control his stress.

My brother has been taking immunosuppressants after his transplant surgery.