It was a fearful cry, but the fox, leaping away in fright, did not drop the ptarmigan.
这是一种可怕的喊声，那只狐狸吓跑了，可是没有丢下松鸡。
He came upon a valley where rock ptarmigan rose on whirring wings from the ledges and muskegs.
他走到了一个山谷，那儿有许多松鸡从岩石和沼地里呼呼地拍着翅膀飞起来。
The broken shell of a recently-hatched ptarmigan egg rests on the ground near Tebay Lakes, Alaska.
在特贝湖旁边的空地上，躺着一片由刚刚破壳而出雷鸟所留下的破损的蛋壳。
He made a clutch as startled as was the rise of the ptarmigan, and there remained in his hand three tail-feathers.
他惊慌地抓了一把，跟那只松鸡飞起时的慌张没什么两样，不过他只抓到了三根尾巴上的羽毛。
It was no uncommon thing now for him to stumble and fall; and stumbling once, he fell squarely into a ptarmigan nest.
现在跌倒对他来说是家常便饭，一次他被绊了一下，正好倒进一个雷鸡窝里。
He came upon a valley where rock ptarmigan rose on whirring wings from the ledges and muskegs. Ker - ker - ker was the cry they made.
他走上一个山谷，松鸡在岩石和沼地间呼呼地拍着翅膀穿梭，发出“咯-咯-咯”的叫声。
Those interviewed spoke of a change in the range of species of mammals (moose and beaver) as well as a decrease in the number of some bird species (ptarmigan).
这次采访中也提到，哺乳动物(麋鹿和海狸)的种群范围正在减小，同样某些鸟类的种群(如松鸡)的数量也在减少。
Those interviewed spoke of a change in the range of species of mammals (moose and beaver) as well as a decrease in the number of some bird species (ptarmigan).
受访者提到哺乳动物(驯鹿和海狸)种群范围的变化，也提到某些鸟类(松鸡)数量下降。
Since his first research visit in 1980, he has traipsed repeatedly among caribou, white polar hare and ptarmigan in this remote area-accessible only by helicopter-for one to three months at a shot.
在这片只有直升机能到达的遥远之地，从1980年第一次的实地研究开始，罗辛每次都停留一到三个月，在驯鹿、北极野兔与雷鸟之间已经反复踱步无数次。
Since his first research visit in 1980, he has traipsed repeatedly among caribou, white polar hare and ptarmigan in this remote area-accessible only by helicopter-for one to three months at a shot.
在这片只有直升机能到达的遥远之地，从1980年第一次的实地研究开始，罗辛每次都停留一到三个月，在驯鹿、北极野兔与雷鸟之间已经反复踱步无数次。
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