A sea bird (Alca torda) of the northern Atlantic, having black-and-white plumage and a white-ringed, flattened bill.是什么意思_A sea bird (Alca torda) of the northern Atlantic, having black-and-white plumage and a white-ringed, flattened bill.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句