v.使褪色；脱色（discolor的过去分词）
adj.脱色的；污染的

The wallpaper had become discolored with age, its once vibrant colors now faded.
墙纸因年久而变色，曾经鲜艳的色彩现已褪色。
After leaving the tea bag in the cup for too long, the water became discolored and bitter.
茶包在杯中放置过久后，水变得颜色浑浊且有苦味。
The painter noticed that the varnish on the old painting had discolored, revealing the need for restoration.
画家注意到旧画上的清漆已经变色，显示出需要修复的迹象。
The carpet showed signs of water damage, with several discolored patches indicating where spills had occurred.
地毯上显示出水损的迹象，几块变色的地方表明有液体溅落过。
Prolonged exposure to sunlight caused the fabric to discolored, losing its original hue.
长时间暴露在阳光下导致布料变色，失去了原有的色彩。
The dentist pointed out that the patient's teeth were discolored due to years of coffee consumption.
牙医指出，由于多年饮用咖啡，患者的牙齿已经变色。
The antique photograph had discolored around the edges, giving it an aged and nostalgic feel.
古老的照片边缘已变色，给人一种陈旧和怀旧的感觉。
The gardener noticed the leaves of the plant had started to discolored, a sign of possible nutrient deficiency.
园丁注意到植物的叶子开始变色，这可能是营养不足的迹象。
The historian carefully handled the discolored document, which held valuable information about the past.
历史学家小心翼翼地处理着那张变色的文件，它包含了关于过去的重要信息。
After the chemical spill, the river's water turned discolored, causing concern among local residents and environmentalists.
化学物质泄漏后，河水变得浑浊，引起了当地居民和环保主义者的担忧。