He is an expert in geophysics.

It's difficult to understand the principles of electrooptics.

I made a mistake.

He has a deep interest in avant-garde art.

Tan like libraries.

He put the tea on the small table.

If the motor nerves are damaged, you will lose control of your muscle movements.

He became neurasthenic due to long hours of work.

This figure is an isosceles trapezoid.

The styloglossus muscle plays a role in raising and pulling the tongue back.