He is spending a lot of time on experimental research.

That plan is too impractical, it's difficult to implement.

His plan was so unrealistic that no one could believe it.

This painting depicts a surreal landscape.

This design has a unique charm because it is asymmetrical.

Her father is receiving palliative care.

He is interested in ichthyological research.

That theory is unscientific and has no evidence at all.

I'm troubled by his unproductive attitude.

This is a preliminary plan.