His reflexes are very sharp.

When the sympathetic nerves are activated, the heart rate increases.

He lost consciousness due to the effects of nerve gas.

He is spending a lot of time on experimental research.

Cerebrospinal fluid plays an important role in protecting the brain and spinal cord.

This compound has a tetrahedral molecular geometry.

That theory is unscientific and has no evidence at all.

He is an expert in computer science.

The Ministry of Education is responsible for Japan's educational policy.

My father is an expert in otolaryngology.