1. 彩虹色的;颜色闪耀的;色彩斑斓的
Something that is iridescent has many bright colours that seem to keep changing.

1. having a play of lustrous rainbow colors

e.g. an iridescent oil slick
nacreous (or pearlescent) clouds looking like mother-of-pearl
a milky opalescent (or opaline) luster

Synonym: nacreousopalescentopalinepearlescent

2. varying in color when seen in different lights or from different angles

e.g. changeable taffeta
chatoyant (or shot) silk
a dragonfly hovered, vibrating and iridescent

Synonym: changeablechatoyantshot