tundra

1.The arctic tundra is at the top of the world around the North Pole.

北极冻原是指北极点周边的地区，是世界最高的地方。

2.A solar phenomenon known as a sundog arcs over the tundra in Churchill, Manitoba, Canada.

/ 太阳的“假日”文现象半悬于拿大Manitoba丘吉尔苔原的。

3.Most of the birds that have ent the brief summer on the tundra now disa ear, leaving only the golden eagle, the gyrfalcon, the ptarmigan, and the owy owl to brave the sunle northern winter.

苔原度过短暂夏的大部分鸟类现已消失，只剩下金鹰、白隼、松鸡和雪白色的猫头鹰来迎接这没有太阳的北极之冬。