A healthy body is necessary for a healthy mind.As is known, to have a sound mind, we must first have a sound body.This is of vital importance.Only by keeping ourselves healthy and strong can we feel energetic and vigorous in studying and working and live a happy life.

　　健康的身体对于健康的头脑是必要的。众所周知，要有健全的头脑，就应有健全的身体。这是至关重要的。我们只有保持身体健康，才能在学习和工作中精力充沛，生活愉快。