n.雷鳥（松雞類，是寒帶地區(qū)特有的鳥類）
A black fox came toward him, carrying a ptarmigan in his mouth. 又有一只黑毛狐貍朝他走來,嘴里銜著一只雷鳥。
I was hiking around Guanella Pass in Colorado to photograph white-tailed ptarmigan. 我正在科羅拉多瓜內(nèi)拉山口徒步旅行，拍攝白尾松雞。
