phrasal verbphr v AMto appear slowly or become louder, or to make a picture or sound do this (使)〔画面〕淡入;(使)〔声音〕渐强fade something ↔ in Additional background sound is faded in at the beginning of the shot. 镜头一开始,背景音渐渐响起。
—fade-in noun [countableC]
→ fade in at fade(2)