We use the solar calendar.

We calculate time using the solar calendar.

In Japan, they used to use a lunar calendar.

The ocean covers most of the surface of the earth.

The durability of this washing machine is 10 years.

He explained the gist of the story.

A solar day is the time it takes for the Earth to orbit around the Sun.

I couldn't understand the state of his behavior.

That great demon had the power to destroy the village.

I strive for body care by doing moderate exercise and eating a balanced diet every day.