indigo

靛蓝，靛蓝染料；靛蓝色；槐蓝属植物英释中释na dark purple-blue colour

靛蓝色的中释adj

1 indigo blue,n. [化]靛蓝；紫蓝色

1 'The vinegar sets the indigo and keeps it from fading,' he says..他说，醋可以使靛蓝变稳定，防止牛仔裤褪色。

2 The indigo plant was highly valued until the discovery of chemical dyes in the 19th century..植物靛蓝在当时的欧洲非常昂贵，直到19世纪化学染料的出现。