Humans can make mistakes.

This world where people live is beautiful, and sometimes harsh.

This old document details the lifestyle of humans.

He received the letter challenging him to a duel and began preparing for the duel.

Gender roles are an important element in defining individual behavior in society.

His role is to fulfill his responsibilities as a leader.

It is important to understand the importance of health.

Low-level languages can directly access the hardware.

He exercises every day and leads a healthy life.

I am planning to have a physical examination next week.