purple emperor
US /ˌpɝː.pəl ˈem.pər.ər/
UK /ˌpɝː.pəl ˈem.pər.ər/
1.
紫皇蝶
a large European butterfly (Apatura iris) of which the male has iridescent purple wings.
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The rare purple emperor butterfly is a magnificent sight in the summer.
稀有的紫皇蝶在夏天是壯麗的景象。
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Male purple emperors are known for their iridescent wings that change color in the light.
雄性紫皇蝶以其在光線下變色的虹彩翅膀而聞名。