The government declared a state of emergency to prevent the spread of the new coronavirus.

The event horizon is a part of a black hole, referring to the region from which even light cannot escape.

My spouse is a doctor.

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

My father is an expert in otolaryngology.

That theory is unscientific and has no evidence at all.

He is an expert in computer science.

He is the creator of this project.

In this village, outsiders are not very welcome.

He gave his life for his faith and became a martyr.