1.The discolouration is due to the presence of pigment contained in the algae cells. The pigment can be red, pink, brown or in other colours.
海上的红潮因不同的藻类色素而有所不同，这些色素可以是红色、粉红色、褐色或其他颜色。
2.The discolouration disappeared promptly following the use of a penicillamine containing shampoo.
迅速消失的变色后使用青霉胺载洗发水。
3.A girl and a boy, both aged 4 years, had displayed a blue discolouration of the skin for several years.
一个女孩和一个男孩，年龄均为4年，表现出一个蓝色的变色的皮肤了好几年。
4.These ingredients can cause bleeding under the nails, discolouration and can roughen the smooth texture of the nails.
这些成分可引起指甲下出血，变色，甚至使原本质地光滑的指甲变得粗糙。
5.Good(chalks). Discolouration may occur in sunlight exposure.
好（会粉化），在太阳暴晒下将引起褪色。
6.Diagnostic criteria and principles of management of skin discolouration induced by cosmetics
化妆品皮肤色素异常诊断标准及处理原则
7.Study on the Discolouration of Copper Core during the Crosslinking Process of Silane Crosslinking PE Cable
硅烷交联聚乙烯电缆在交联过程中铜线芯变色的研究
8.Discolouration of the deposits in production of brass plating
浅谈黄铜电镀生产中镀层变色问题