In psychology, it is important to understand human emotions.

People who are not well-informed find it difficult to use internet information appropriately.

He couldn't control his five passions, and his anger exploded.

This history book contains detailed information about the era of barbarian affection.

His dog started to go into heat yesterday.

His dog has entered the mating season.

His voice was filled with deep sadness.

He acted with confidence without belittling himself.

We must fulfill our responsibilities as a society.

His hair has started to tingle with black from sunburn.