In the fourth chapter, we studied the iridescence phenomena of the green and purple feathers on the neck of pigeon.

第四章中，我们研究了鸽子颈部绿色和紫色羽毛的虹彩现象。

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Pigeon and green stand for peace.

鸽子和绿色象征着和平。

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Other names for this bird are Celebes Imperial Pigeon, Celebes Green Imperial Pigeon and Green Imperial Pigeon.

其它名字对于这只鸟是Celebes 皇家鸽子， Celebes 绿色皇家鸽子和 绿色皇家鸽子。

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As the sun rose, they sliced plantains to prepare tostones (twice-fried green plantains) and boiled gandules (pigeon peas) with rice.

BBC: Puerto Rico��s Pork Highway

Other times, though, the pigeon had to tap a tiresome 20 pecks before the light turned green and the grain was delivered.

ECONOMIST: Puritanical pigeons