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.

He prayed to the god, offering his prayers.

He learned the basics of Japanese.

She is maintaining an average grade.

I like to take a break after finishing a job.

He was imprisoned as a political offender.

His talent is immediately noticeable.

He pointed to the location on the map with his index finger.