His success is the result of the fruit of painstaking study.

His mood is always fluctuating high and low.

Her dress was crimson, and it was very beautiful.

I was surprised by his ingenious plan.

Hideyuki is my best friend.

In the Heian period, the court nobles played a crucial role in determining the country's policies.

He is known for his scholarliness.

He was riding a bicycle on the public road.

The efficiency of this machine is very high.

He can play the Jew's harp well.