lead-in

名词 lead-in:

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

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。

lead-in

n.（名词）
Opening or introductory matter:
引子：开场白或介绍性的事务：
例句：
The joke served as a lead-in to a discussion of more serious matters.
这个笑话是为了引入讨论更严肃的问题

A program, as on television, scheduled to precede another.
导入部分：被优先安排在另一节目之前的节目，如电视上
The wire that connects an outdoor antenna to an electronic transmitter or receiver.
引入线：将室外天线与电子发射机或接收器连接起来的电线