- and has taken them three months.
耗时多达三个多月 - Exhausted and starving, they touch down inside the Arctic Circle,
虽然早己精疲力竭 饥肠辘辘 但它们终于返回了北极圈 - back at their traditional breeding grounds at last.
返回了它们阔别已久的繁殖地 - Snow geese pair for life.
雪雁一生只忠于一个配偶 - As soon as couples arrive, they must stake a claim to a nesting patch.
一对雪雁来了之后就必须取得自己的筑巢地 - Ideal sites are in short supply and quarrelsome neighbours are all around.
理想的地方寥寥无几,邻里纠纷时常发生 - Disputes can be vicious.
有时闹得杀气腾腾
Snow geese pair for life. 雪雁一生只忠于一个配偶
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