He was playing with the dog at the back of the house.

He leaned his back against the chair and relaxed.

He has perfectly mastered the Received Pronunciation of English.

Can you tell me the phonetic symbol of this word?

He is doing a special exercise to strengthen his omohyoid muscle.

The stylohyoid muscle is part of the muscles of the head and has the role of lifting the hyoid bone.

He worked as a rear gunner in a fighter plane.

He sneaked into the school through the back gate.

He was unconsciously following the woman.

The trailing edge of this airplane has a very unique shape.