Researchers took blood from nearly 700 birds around Anchorage, Fairbanks and a truck stop called Coldfoot, Alaska, above the Arctic Circle at 67 degrees north latitude.
研究人员从700只鸟身上抽取了血样，这些鸟分布在北极圈北纬67度的阿拉斯加安克雷奇市，费尔班克斯市以及一个称作“Coldfoot”的卡车停车场周边。
Researchers took blood from nearly 700 birds around Anchorage, Fairbanks and a truck stop called Coldfoot, Alaska, above the Arctic Circle at 67 degrees north latitude.
研究人员从700只鸟身上抽取了血样，这些鸟分布在北极圈北纬67度的阿拉斯加安克雷奇市，费尔班克斯市以及一个称作“Coldfoot”的卡车停车场周边。
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