The characteristic of annelids is that their bodies are divided into ring-shaped segments.

This butterfly valve is used to control the flow of fluid.

He explained in detail about the structure of the sphenoid bone.

He drew a straight line using a T-square.

She is learning the grammar of the present progressive form.

I live in Tokyo.

He turned thirty years old.

廾 is a radical that means twenty.

I learn something new every day.

He has a gun.