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

1.北极冻原是指北极点周边区，是世界最高。

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

2./ 太阳“假日”天文现象半悬于加大Manitoba丘吉尔苔原天际。

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.

3.在苔原度夏天大部分鸟类现已消失，只剩下金鹰、白隼、松鸡和雪白色猫头鹰来迎接这没有太阳北极之冬。