gray-olive greenbul 橄榄灰旋叶鹎
They get their name not from their skin color, which tends to be olive to gray, but rather from the blue-black color of the inside of their mouth, which they display when threatened.
它们并不是因为皮色而得名，它们的皮色有点橄榄色到灰色之间，而是由于当它们受到威胁时，张开嘴巴，嘴巴里面颜色是蓝黑色而得名的。
A yellow and olive warbler (Oporornis philadelphia) of eastern North America, having a bluish gray hood set off by a black band on its breast.
一种分布于北美东部地区的黄色和橄榄色的林莺（哀林莺） ，长有淡蓝灰色的羽冠，胸口衬有黑条纹。
He was an Air Force captain, and his blue uniform stood out amid our Army olive drab and cadet gray.
他是一名空军上尉，他那蓝色的制服在我们陆军的草绿色制服和暗灰色制服中间格外显眼。
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