This area is still undeveloped and rich in nature.

This area is still undeveloped, and nature is abundant.

This sentence is written in the present tense.

He said it was hard to bring up Mitsuru.

I use bitter almond oil for massage.

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

The mylohyoid muscle plays an important role in opening the mouth.

The suprahyoid muscle is one of the muscles that help in mastication and swallowing.

The thyrohyoid muscle is one of the muscles that lift the larynx.

The infrahyoid muscle is a part of the neck muscles, and it has the role of pulling the hyoid bone downward.