The moose is the world's largest deer.

驼鹿是最大的鹿科物。

And there is no cervine institute.

也没有鹿科物机构。

It's one of the tallest mammals in North America, and the largest of all deer species in the world: the moose.

它是北美最高的物之一，也是体型最大的鹿科物：驼鹿。

Why would cute little deer-things end up leading a whole order of mammals to life in the deep sea?

为什么可爱的鹿科小物会引导整个物目进化到深海生活？

And there in the middle is the walking swimming whale, linking whales as we know them to tiny, cat-sized deer-things, just dipping their toes in the water for the first time.

而在中间的就是步行游泳鲸，它将我们所熟知的鲸目物与那些小型、猫般大小的鹿科物联系起来，这些鹿科物刚刚开始把脚趾浸入水中。