(因感到有趣而)目不转睛地看;(因害怕而)动弹不得,呆若木鸡
to not be able to stop looking at something because it is so interesting or frightening
  It was an amazing film - I was absolutely riveted. 那部电影太精彩了——我完全被吸引住了。 
be riveted on His eyes were riveted on the television. 他双眼紧盯着电视看。 
be riveted to the spot He pulled out a gun and I was riveted to the spot (= so frightened that I could not move). 他拔出了枪,我简直被吓呆了。 
 I couldn't take my eyes off the screen - I was riveted.
 It was an astonishing performance and the audience's attention was riveted.
 It seemed like the whole nation was riveted to the TV screen.
 See also: rivet verb