It was bright red with well-defined veins.
它有着鲜艳的红色和清晰的脉络。
The colors used in the drawings are conventional medical artist colors, with arteries in red and veins in purple or blue.
示意图中所使用的色彩是常规的医学标记色彩：动脉为红色，静脉为紫色或蓝色。
Dark red Travertine from Iran is best red Travertine of the world. It has very dark red color with direct veins and also has very small holes.
产自伊朗的暗红洞石是世界上最好的红洞石，具有非常鲜明的暗红色，带有笔直的纹理以及一些细小的孔。
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