surface discolour板面变色
silver discolour银变色
Plating discolour金面变色
discolour glaze变色釉
track discolour径迹变色
discolour deutzia异色溲疏
discolour inhibitor变色抑制剂
Tin lead discolour锡发黑
potentilla discolour bunge翻白草
V-T/V-I（及物动词/不及物动词） If something discolours or if it is discoloured by something else, its original colour changes, so that it looks unattractive. 褪色
Peas will discolour in contact with the acids in vinaigrette.
豌豆与香料酸接触后会褪色。
ADJ（形容词） discoloured
Some of the prints were badly discoloured.
有一些照片已经严重褪色。