Some of the prints were badly discoloured.

有一些照片已经严重褪色。

He had bad teeth, irregular and discoloured.

他的牙齿不好，不整齐，而且变了色。

Sunshine discoloured many materials.

阳光使许多材料褪色。

The carpet had discoloured over the years.

地毯用过多年后已变色了。

DISCOLOURED TONGUE: Blame the docs for this one.

舌头发白：这要怪医生。