a slender Eurasian plant related to the knapweeds, with flowers that are typically a deep, vivid blue 矢车菊。 (亦称bluebottle)
Genus Centaurea, family Compositae: several species, including the annual Centaurea cyaneus , formerly a common weed cornfields, and the perennial C. montana, grown in gardens 矢车菊属,菊科,数种,包括一年生的矢车菊和多年生的山矢车菊 (亦称bluebottle) ■(亦作 cornflower blue)[mass noun]a deep, vivid blue colour 矢车菊蓝;中藏蓝