The analysis of informers' motives should adhere to a pragmatic approach and grasp the motives change. 在剖析线人动机时应坚持实事求是的态度，把握动机的变化。
Only in this way can we give full play to the function of the news informers in the guiding of the public opinions. 惟有如此，新闻线人的作用才能发挥得更完全，才能更充分发挥新闻舆论的导向作用。