This is a secret matter, so please don't tell anyone.

Numerology is the study of deciphering the secret meanings of numbers.

He found a hidden hot spring deep in the mountains.

This secret ceremony is a mysterious ritual passed down from ancient times.

The treasure container is decorated with a beautiful design.

There is a custom of eating rice cakes facing the favorable direction at the New Year.

This color has a high degree of saturation.

This sponge is saturated with water.

Let's calculate the normal of this line and plane.

Apples are more delicious than oranges.