没有海冰，北极熊就无法生存。 它们需要利用海冰来抚养幼仔，四处漫游，并以此为平台捕猎它们的主要食物，海豹。
Polar bears cannot survive without sea ice, using it to raise their young, to travel and as a platform for hunting seals - their primary food source.
雌性要抚育它们的幼仔三至四个月，直到小宝宝能够自己游泳。
Females nurse their young for three to four months until the babies can swim on their own.
当西·卡普和无牙仔飞向天空时，我们感觉无拘无束，四周都是辽阔的天空。
When Hiccup and Toothless take to the sky, we're free of constraint, aware of the space on all sides.
应用推荐