电视画面的时明时暗广播音量的时强时弱淡入淡出电影电视亮度渐暗电影电视声音渐弱无线电声音渐弱使画面渐显或渐隐使淡入使淡出通常与 in或out连用图像衰减减弱逐渐消失渐淡变淡

The flickering of TV images, the flickering of radio volume, fade-in and fade-out, the gradual dimming of movie and TV brightness, the gradual weakening of movie and TV sound, the gradual weakening of radio sound, making the picture gradually appear or fade, fade-in and fade-out, usually used in combination with in or out, image attenuation, weakening, gradual disappearance, fade-out, fading

以上为机器翻译结果，长、整句建议使用 人工翻译 。