What makes a second-rate actress like Jean so self-satisfied, so over-confident?是什么使琼那样的二流演员如此沾沾自喜，如此过于自信？The sense of let-down today is all the greater because in the past doctors have been over-confident about these treatments.医生们过去对这些疗法过度自信，导致今天的挫败感尤其强烈。