fading on line-of-sight path

例句：

1. 1. The once vibrant colorsof the painting are now fading intoa dull gray.
   这幅画曾经鲜艳的颜色现在正逐渐变成暗淡的灰色。
2. 2. Astime passed, the memories of that placebegan to fade from her mind.
   随着时间的流逝，那个地方的记忆开始从她的脑海中淡去。
3. 3. The sun's rays werefading as the day drew to aclose.
   太阳的光线正在减弱，随着一天的结束。