Free fatty acids are used as an energy source in the body.

Essential fatty acids are vital nutrients for our health.

Essential amino acids cannot be produced by the human body, so they need to be obtained from the diet.

He is involved in the development of androids.

Cao joined the military as a new cadet.

His room is always miscellaneous, with things scattered around.

I'll leave the ending of this story to your imagination.

Recently, his popularity has been increasing.

The Great Eastern Japan Earthquake is one of the most damaging earthquakes in Japanese history.

My heart was healed by the beautiful scenery of Nara.