If I were you, I will tell my friends the fatalness of smoking. 如果我是你，我就会告诉我的朋友抽烟的危险性。
So moblie agents can move among those hosts that be trusted,thus the fatalness attacked by malicious will recede,and the security wiil be improved. 这样移动代理可以在具有信任关系的主机间进行迁移，而降低了受到恶意主机攻击的危险性，提高了安全性。
