If you tell an acquaintance you are a grandfather who recently lost his wife and who does volunteer work on weekends, several elements of your self-image are bought to light — the roles of grandparent, widower and conscientious citizen.
出自-2013年6月聽力原文
For a social epidemic to occur,however,each person so affected,must then influence his or her own acquaintances,who must in turn influence theirs,and so on;and just how many others pay attention to each of these people has little to do with the initial influential.