Every morning, I wake up in despair.

He cannot recognize his friend's face due to prosopagnosia.

This curtain is made of fire-retardant material.

He was working as a frontier guard in ancient Japan.

The 畝 is a traditional unit of measurement in Japan.

My father works at a trading company.

He is an important character.

This product is a parallel import.

We need to calculate the harmonic mean of this dataset.

The latest research results from NASA have been announced.