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This is the more recent human ancestor.
这是出现得晚一点的人类祖先
Its teeth are smaller, they're crustier,
它的牙齿小一些 却更坚硬
and the enamel is thinner.
釉质也变薄了
Professor Ungar wants to find out
恩戈教授想探究
how these very different sets of teeth have adapted to different diets.
各式各样的牙齿是如何适应不同饮食结构的
Enter the BITE Master II.
咀嚼模拟器II出场
This unique machine simulates chewing.
唯一能够模拟咀嚼的机器
It will put these ancient jaws to the test.
我们将用它检测这些古老的颌骨
We're going to set it chewing on different sorts of foods
我们会让它们咀嚼不同的食物
and try and see how the different teeth
努力观察不同的牙齿
affect the way the food's broken down during the chewing.
咀嚼时食物破碎的方式
This is the first time in three million years
这是这些南方古猿的牙齿
that these australopithecus teeth have seen action.
三百万年以来第一次运动
So how will they fare against a raw carrot?
它们进食生胡萝卜时效果如何呢
OK, give it a shot.
好了 试一下吧
