I need you.

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

Essential amino acids are necessary to be taken from our diet because our body cannot produce them on its own.

Essential amino acids, which the human body cannot produce on its own, need to be obtained from the diet.

Her smile was shining brightly.

His name is Sansan.

I learned about the reaction of amidine in chemistry class.

This is my first question.

He thinks that war is a necessary evil.

Do you understand the necessity of this project?