通信体制衰落电视画面的时明时暗广播音量的时强时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 decline of the communication system causes the TV picture to flicker on and off, and the radio volume to be sometimes strong and sometimes weak, making the picture gradually appear or disappear, fade in and fade out. This is usually used in conjunction with in or out. Image attenuation weakens, gradually disappears, and fades fades
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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