fade-in n渐显
Fade-in Curve在曲线中褪色方式
background fade-in背景淡入
fade-in detail渐现
fade-in volume淡入音量
fade-in-left左侧淡入
fade-in-bottom下侧淡入
fade-in-right右侧淡入
fade-in-top上侧淡入
N（名词） an optical effect in which a shot appears gradually out of darkness 渐现 [films]
V（动词） to increase or cause to increase gradually, as vision or sound in a film or broadcast 渐增 (See also fade up)