His good enunciation greatly contributed to his winning first place in the speech contest.

His knee problem is due to a lack of synovial fluid.

He is immersed in the study of callus.

He is called a 'kid's room uncle', and is alienated from society.

This old tunnel was once used in a mine.

This old tunnel was once a key point of transportation.

This old tunnel was once a key point of transportation.

My son is learning karate.

The gynecologist checks the health of the vagina.

He respects the spirit of Bushido.