Just keeping warm saps huge amounts of energy. 仅仅保暖都需要耗费大量的能量 Their thick coats can insulate them down to minus 20 Fahrenheit. 他们厚重的皮毛可耐受零下三十度的低温 It's now minus 40. 现在是零下四十度 The only thing that will keep them alive 唯一能让他们活下去的食物 is burie...
Their thick coats can insulate them down to minus 20 Fahrenheit. 他们厚重的皮毛可耐受零下三十度的低温 It's now minus 40. 现在是零下四十度 The only thing that will keep them alive 唯一能让他们活下去的食物 is buried beneath three feet of snow. 被深埋在一米深的积雪之下 And that's a pr...
it's about to be buried. 马上还会被大雪掩埋 Sixty million tons of snow now blanket this herd's territory. 六千万吨的积雪覆盖在野牛群的领地上 Pushing through deep snow is exhausting work, 在厚厚的积雪中行动非常耗费体力 and the bison are now slowly starving. 美洲野牛越来越饥饿 Just k...
Sixty million tons of snow now blanket this herd's territory. 六千万吨的积雪覆盖在野牛群的领地上 Pushing through deep snow is exhausting work, 在厚厚的积雪中行动非常耗费体力 and the bison are now slowly starving. 美洲野牛越来越饥饿 Just keeping warm saps huge amounts of energy...
Pushing through deep snow is exhausting work, 在厚厚的积雪中行动非常耗费体力 and the bison are now slowly starving. 美洲野牛越来越饥饿 Just keeping warm saps huge amounts of energy. 仅仅保暖都需要耗费大量的能量 Their thick coats can insulate them down to minus 20 Fahrenheit. 他们...
the prairies of North America begin to freeze. 北美的草原开始霜冻 In summer, bison roamed freely, 夏季 美洲野牛四处漫步 almost continuously cropping the abundant green grass. 享用着取之不尽的大片青草 Now, that grass is not only withered and frozen, 现在青草不仅枯萎结冰 it's ab...
In summer, bison roamed freely, 夏季 美洲野牛四处漫步 almost continuously cropping the abundant green grass. 享用着取之不尽的大片青草 Now, that grass is not only withered and frozen, 现在青草不仅枯萎结冰 it's about to be buried. 马上还会被大雪掩埋 Sixty million tons of snow no...
almost continuously cropping the abundant green grass. 享用着取之不尽的大片青草 Now, that grass is not only withered and frozen, 现在青草不仅枯萎结冰 it's about to be buried. 马上还会被大雪掩埋 Sixty million tons of snow now blanket this herd's territory. 六千万吨的积雪...
Now, that grass is not only withered and frozen, 现在青草不仅枯萎结冰 it's about to be buried. 马上还会被大雪掩埋 Sixty million tons of snow now blanket this herd's territory. 六千万吨的积雪覆盖在野牛群的领地上 Pushing through deep snow is exhausting work, 在厚厚的积雪中行动非常...
but eventually the rains will return 但是雨季终将来临 and the grass will sprout again. 青草又会重新发芽 Some grasslands must endure not only fire, but ice. 一些草原不仅要忍受火的炙烤 还有冰霜 As winter approaches, 冬季来临 the prairies of North America begin to freeze. 北美的草原开始...