v.(使)变色，退色

原形：discolour第三人称单数：discolours过去式：discoloured过去分词：discoloured现在分词：discolouring

The sun has discoloured the curtains over time.
随着时间的推移，太阳已经使窗帘褪色了。
The old rug had become discoloured from years of exposure to sunlight.
这块旧地毯因长期受阳光照射而变色了。
The shirt was severely discoloured after being left in the washing machine for too long.
衬衫在洗衣机里放太久后严重褪色。
Her teeth were slightly discoloured due to drinking too much coffee.
她由于喝太多咖啡导致牙齿微微泛黄。
The water in the fish tank had discoloured; it was time to change it.
鱼缸里的水已变色，是时候更换了。
Over time, the pages of the book have become yellow and discoloured.
随着时间的推移，这本书的书页已经泛黄并褪色。
The once-white wall was now discoloured with patches of damp.
曾经白色的墙壁现在因潮湿而出现了斑驳的褪色痕迹。
He noticed that the fabric had started to discolour under the harsh chemicals.
他注意到这块布料在强烈化学物质的作用下开始褪色。
The rainwater had seeped through, causing the wallpaper to discolour and peel off.
雨水渗透进来，使得壁纸褪色并开始剥落。
After years of neglect, the painting had significantly discoloured and lost much of its original vibrancy.
经过多年的忽视，这幅画已经严重褪色，失去了原有的鲜艳色彩。