资料来源 : pyDict

[口](电视中发言者的)头部特写;接受电视采访者;(电视在播放电影等时头部出现在萤幕上的)旁叙人

资料来源 : WordNet®

talking head
     n : a talker on television who talks directly into the cameras
         and whose upper body is all that is shown on the screen