常見例句Any of various birds,such as the scaup,with dark head markings. 黑頭鳥一種以頭部呈黑色爲(wèi)特征的鳥,如斑背潛鴨Any of various birds, such as the scaup, with dark head markings. 黑頭鳥一種以頭部呈黑色爲(wèi)特征的鳥,如斑背潛鴨Lesser Scaup Aythya affinis, Northern Pintail Anas acuta, and several sea ducks are showing troubling declines, but most geese are increasing dramatically and many ducks have held steady. 一些鳥類如針尾鴨和海鴨等的數(shù)量仍然在下降,但是大多數(shù)雁類的數(shù)量都有了明顯增加,很多鴨子的數(shù)量也保持穩(wěn)定。common scaup of North America; males have purplish heads. 北美洲普通的潛鴨;雄性的頭部略帶紫色。any of various birds,such as the scaup,with dark head markings 一種以頭部呈黑色爲(wèi)特征的鳥,如斑背潛鴨common scaup of North America; males have purplish heads 北美洲普通的潛鴨;雄性的頭部略帶紫色 返回 scaup