The middle pharyngeal constrictor is an important muscle that helps with swallowing.

This 立方半八面體 is one of the shapes in geometry.

This regular dodecahedron is a geometric shape with perfect symmetry.

This solid is called a regular icosahedron, and it is made up of 20 equilateral triangles.

He was immersed in music.

I consigned my dog to him.

We are friends who share both happiness and sadness.

I sincerely thank you for your help.

My grandfather contracted poliomyelitis when he was young.

He is exactly in the state of 'A frog in a well does not know the vast ocean.'