He was calculating in his head.

In Japanese grammar, the ren'youkei form of verbs plays an important role.

Our relationship is very deep.

He solved complex mathematical problems using his new calculator.

I deeply respect him.

The bird called Ruanjing that appears in Chinese mythology is known for its beautiful appearance.

The radius of this circle is 5 centimeters.

The form of this sculpture is very unique.

In English, adding 's' after a noun makes it a plural form.

I will make dinner using chicken.