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
To make the picture gradually appear or fade, to fade in or fade out, usually used in combination with in or out, image attenuation, weakening, gradual disappearance, fading, fading
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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