To overcome the challenges of a more hostile world, 为了克服恶劣环境所带来的挑战
Down here, during the Ice Age, our cousins faced many new challenges. 在冰河时期 我们的表亲在这里面临许多新的挑战
But not all their challenges are to do with finding food and water. 但并不是所有的挑战 都与寻找食物和水有关
Twenty million years later, life faced one of its greatest challenges... 2000万年后 生命面临又一个巨大的挑战
...all perfectly adapted to the challenges of life. 它们全都完美地适应了生命的挑战
Our changing planet has created so many challenges for life. 我们不断变化的星球 为生命制♥造♥了诸多挑战
Before they face the challenges ahead, 在携手面对未来的挑战前
Here, animals are adapting to new challenges 在这个瞬息万变的世界里
We will see how animals are adapting in extraordinary ways to survive the new challenges they face. 我们将看到面临新的挑战,动物如何以非凡的方式去适应