actor [ˈæktər] n. 演员
英英解释（牛津词典）：
a person who performs on the stage, on television or in films/movies, especially as a profession
actor的特点：
一种人（a person）表演在舞台上、电视上或者电影里（ who performs on the stage, on television or in films/movies,）尤其是专业人员（ especially as a profession）单词选自：
人教精通版小学《英语》