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

He is conducting research on historical kana usage.

He often thinks about problems from a humanitarian perspective.

His company is facing the risk of a hostile takeover.

He is spending a lot of time on experimental research.

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

I'm troubled by his unproductive attitude.

We will make this project successful by working together with one mind.

He damaged his motor nerves in an accident.

Neurotransmitters play a crucial role in transmitting information in the brain.