Hiniku is my favorite restaurant.

A bat is a small mammal that is active at night.

I am planning to go to Hida City in Gifu Prefecture next week.

Hiyu is my best friend.

The air in this room is fresh.

What will you use this empty box for?

Looking at the bird flying high in the sky, I felt freedom.

The altitude of this airplane is 10,000 meters.

In mathematics, an empty set refers to a set that does not contain any elements.

I enjoyed a picnic under the clear sky.