rosaniline ; crocein ; red dye ; orchil ; red dyestuff ; orcein dye
皮革上的红色染料是水溶性的。
我几乎用了一整瓶的红色染料来做糖霜，这在早些时候会让我感到害怕。
I used practically a whole bottle of red dye in the frosting, which in earlier days would appall me.
在这张照片，红色染料用来显示骨骼，蓝色染料有时被用来强调软骨。
In this photo, red dye has been used to show the bones; blue dye is sometimes used to highlight the cartilage.
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