discolour的例句（discolour在句子中的用法）

• Plastic tends to discolour with age. 塑料久而久之便会退色。
• A tooth which has been hit hard may discolour. 受过重击的牙齿可能会变色。
• Benzoyl peroxide can cause fabric to discolour on contact. Use with care. 过氧化苯可能导致织物脱色, 请小心使用.
• A tooth which has been hit hard may discolour... 受过重击的牙齿可能会变色。