It is said that kojic acid has a whitening effect.

He was plowing and weeding the rice field all day.

He was plowing and weeding in the rice field all day.

The bellflower is my favorite flower.

He was arrested for obstruction of public duties.

He is a genius, but even experts sometimes make mistakes. He also makes mistakes sometimes.

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Biotechnology is a science that understands the mechanisms of life and utilizes them.

This road is a dead end, so we have to find another way.

The Commonwealth of Independent States is an intergovernmental organization formed by part of the former Soviet Union.