He always has a bright and positive attitude like an optimist.

He always lives with optimism.

He thought he was the best for a long time.

He thought for a while that I had finished the job.

Butyrate is said to be beneficial for the health of the intestinal flora.

He was moved by the beautiful feathers of the bird of paradise.

My uncle owns a large dairy farm in Hokkaido.

Deciduous forests clearly show the change of seasons.

I do laundry using synthetic detergent.

He is leading a life of hedonism.