Mary was angry with herself. She said, "Am I losing it?"Emma Cleveland was teaching a class in mathematics at a college. She began to explain to the students how to solve a very difficult problem. She understood it very well. But somehow, at that moment, she could not explain it. Emma said, "I must be losing it."玛丽非常气恼.她说,"难道我真没用了吗?"艾玛`克利夫兰(Emma Cleveland)在一所大学教数学.她开始向学生们解释如何解决一个难题,她理解得非常透彻,但那一刻不知何故她解释不出来.艾玛说,"我一定是无法解出来这题了."
_________________________________________________
