But as the environment became drier around two million years ago, they began to forage in more-open grasslands-a problem for brains, which are notoriously vulnerable to heat.
但200万年前，随着环境变得更加干燥，他们开始在更开阔的草地上寻找食物——这对大脑是一大考验。众所周知，大脑对热很敏感。
The cheetah finds the open grasslands ideal footing for its lightning-quick sprints.
非洲猎豹把开阔的草原作为它们闪电猎食的理想处所。
The cheetah finds the open grasslands ideal footing for its lightning-quick sprints.
非洲猎豹把开阔的草原作为它们闪电猎食的理想处所。
应用推荐