lead-in
GEPT 中高級
C2noun
the introductory section of a story
In the lead-in of the mystery novel, the author skillfully set the stage for the suspenseful plot that would unfold.
引言；開場白
C2noun
a wire or cable used to connect an antenna to a receiver or a transmitter to a transmission line
Before we can watch television, we need to install a lead-in to connect the antenna to the TV receiver.
引線；導線