BBC纪录片《冰冻星球》冬季第2期:狼

[00:00:57]As winter deepens, 随着冬季的深入 [00:02:24]frigid air from the Arctic 从北极来的冷空气 [00:04:10]meets warm, moist air from the south, 与南方温暖湿润的空气相遇 [00:06:33]producing particularly heavy snows. 形成了漫天的暴雪 [00:16:31]For the big animals of the forest, 对于森林中的大型动物 [00:18:32]there's no way of hiding from the winter. 寒冬似乎无法躲避 [00:21:07]But size, for the bison of Northern Canada, 但对加拿大北部的野牛来说 [00:28:54]is, in fact, their salvation. 体积大 反而成了它们的优势 [00:31:20]Big bodies lose less heat 庞大的体积能减少热量流失 [00:33:30]and can carry more insulation. 而且隔热效果好 [00:36:47]That may be why these bison 这也解释了为何这些野牛 [00:38:59]are the largest land animals in North America. 是北美洲体积最庞大的陆地动物 [00:45:25]And only a large predator can tackle them. 只有大型的食肉动物才能擒获它们 [00:57:09]Wolves hunt better in packs, 狼 以集体狩猎见长 [00:59:03]but there are only two of them here 但目前只有两匹狼作伴 [01:00:26]and the prey they pursue are giants. 而它们追捕的猎物却体型硕大

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