cowbirdsCOCA⁸³¹⁸⁸BNC¹⁷³⁹⁹⁵⁺² 基本例句 n.牛鹂原型cowbird的复数 The eradication of cowbirds has been going on for a while here in an effort to study the effect of their parasitism on endangered birds such as the black-capped vireo and the golden- cheeked warbler. 在这里，根除燕八哥的活动已经进行了一段时间，目的是研究它们对黑头绿鹃和金颊莺之类濒危鸟类的寄生影响。 yeeyan