During commercials, an overlay will appear at the bottom of the screen, prompting viewers to press a button to request a free sample or order a catalogue.
2016年6月六級(jí)真題（第三套）閱讀 Section C
柯林斯高階英漢雙解學(xué)習(xí)詞典釋義
N-UNCOUNT
鼓勵(lì)；敦促；驅(qū)使；慫恿
If you respond to prompting, you do what someone encourages or reminds you to do.