The use of the black dye can be limited to a small number of cells or to more extensive groups; occasionally one may even obtain a comprehensive view of an entire area of the central nervous system.

使用这种黑色染料我们可以将染色局限在一小部分的细胞和它们的衍生部分；运气好的话，我们甚至可以获得对于整个中枢神经组织的完整视野。

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BPA is used to coat thermal paper, which reacts with dye to form black print on receipts handled by millions of Americans every day.

BPA被用在热敏纸的表面涂层中，这种热敏纸和染料发生反应从而显示黑色字迹的收据每天在数以百万的美国人手中传递着。

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Black will dye over other colours.

黑色能把大多数其他颜色盖住。

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Now kids are awash in orange and black clothes, face paint and hair dye.

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To get even more color on her market, Jarecki posted research surveys at her company's site and inserted them into the dye packaging. (Buyers who filled them out received a free "My Betty Is Ready" black cotton T-shirt.) About 1, 000 responses told a surprising story: Less than 5% of her customer base came from the 18- to 25-year-old demographic, and half lived in non-urban zones like Nebraska, Washington and Arkansas.

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So, cast as a black man in the war movie, Lazarus decides to dye his skin surgically.

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