moderate fading

例句：

1. 1. The fabric has undergone a moderate fading process.
   这织物经历了一次适度的褪色过程。
2. 2. The painting shows the effects of moderate fading over time.
   这幅画展示了时间对适度褪色的影响。
3. 3.The sun's rays have caused some areas to experience moderate fading.
   阳光照射导致一些区域出现了适度褪色。