He choked on his food during the meal.

My daughter will graduate from kindergarten next week.

My younger sister will graduate from kindergarten tomorrow.

Silver salt plays an important role in photography.

This curtain is made of fire-retardant material.

My daughter goes to the nursery school every day by the commuting bus.

I send my son to the nursery school every day.

My daughter goes to the nursery school every day.

Butyrate is said to be beneficial for the health of the intestinal flora.

This 'enkanabachi' is a very rare type of bee.