Dye red leaves, dye budding flower red.

染红了树叶，染红了待放的花朵。

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Quaternized reactive formaldehyde-free color-fixing agent HET was synthesized, and its color fixation effect was tested for wool dyed with acid dye red g.

合成了一种季铵化反应性树脂无醛固色剂het，测定了该固色剂对羊毛织物经酸性红g染色后的固色效果。

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The red dye on the leather is water-soluble.

皮革上的红色染料是水溶性的。

《柯林斯英汉双解大词典》

The alert follows the discovery of a red dye, called Sudan 1, in chilli powder used in the sauces.

BBC: NEWS | Health | Cancer alert over pasta sauces

When baby seals were being clubbed to death in 1978 in the Magdalene Islands in Canada, the fund's crusaders painted the seals with red dye, making their coats worthless to furriers.

ECONOMIST: Cleveland Amory | The

That's exactly what the whiz-kids from the City College of New York, Rice University and the US Army Research Laboratory have done with a new lithium-ion battery powered by red dye extracted from madder roots.

ENGADGET: Scientists develop eco battery powered by root-extracted dye