不要太简单……判断标准是什么?
初中生：I'll live a colorful life in my life if I am helpful to others.
高中生：One may live a corlorful life in his life when he is helpful to the society.
大学生：People who want to live a colorful life ,the best way is to be helpful to the society in their life.
其实这三句话一个初中生也会说,我就是人为的划分下等级,