I ate a sandwich in the park during my lunch break.

Essential fatty acids play an important role in our health.

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

He looked at her with his eyes looking upward.

He always acts considering right and wrong.

On Children's Day, we decorate our garden with a large koinobori.

We suffered collateral damage due to his failure.

Because he is deaf, we have to speak loudly.

He wrote a new paper on string theory.

String theory is a branch of physics that is a theory for understanding the basic structure of the universe.