| 单词 | indigo |
| 释义 | indigo n[U] 1 deep blue dye (obtained from plants) 靛, 靛青, 靛蓝（自植物中提取的颜料）. 2 its colour (in the spectrum between blue and violet) 靛蓝色 a tropical night sky of deepest indigo 靛蓝色的热带夜空. =>illus at spectrum 见spectrum插图. |
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