lead in

名词 lead in:

1. the introductory section of a story
   同义词：lead, lead-in, lede
2. wire connecting an antenna to a receiver or a transmitter to a transmission line
   同义词：lead-in

1. He told an amusing story as a lead-in to the serious part of his speech.
   他讲了一个有趣的故事作他演说中重要内容的引子。