The engine is designed to scavenge.

I confirmed that the engine's scavenging system is functioning properly.

The engine of this car is very powerful.

I can't read his feelings.

I have a feeling that he likes me.

He started drawing blueprints to plan out a new house.

He started designing a new house.

It is my habit to clean my room every day.

The car suddenly stalled.

I'm concerned about his attitude.