I don't know if he will come.

He embodies the spirit of learning from the past to understand the new by reading old books.

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

His dog has entered the mating season.

His dog started to go into heat yesterday.

His voice was filled with deep sadness.

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

In psychology, it is important to understand human emotions.

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

His ideology greatly influences his actions.