He drew a straight line using a T-square.

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

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

He thought he was smart, but he remembered the proverb 'a fool may give a wise man council', and understood the importance of listening to others' opinions.

This shape is a parallelogram.

This shape is a parallelogram.

This music is flowing with a pleasant ⠐⠫ along with a beautiful melody.