The Australopithecus teeth, because they're big and flat, 南方古猿的牙齿 大而平 were very effective at crushing this food and fracturing it into two pieces. 因此对碾压食物 将其分成两半非常有效 Oh, that's cool. 太酷了 Tha...
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...
In the natural world, 自然界中 animals' adaptation to their diet is clear. 动物适应饮食习惯的进化事例很多 Herbivorous grazers, 食草动物 like gazelles, have large flat back teeth, 比如羚羊 有着大而平的臼齿 useful for...
The gas given off contains two carbon isotopes. 释放出的气体包含两种碳同位素 The ratio of one to the other will indicate 两种同位素之间的比例可以说明 whether our ancestors were foraging in woods 我们的祖先是在森林中...
Professor Julia Lee-Thorp is examining 朱莉娅里霍普教授检测了 very ancient teeth from the jaws of both animals and humans 生活在数百万年前的动物和人类的 which lived millions of years ago. 古老牙齿 I'm incredibly nervous 处...
It's the first early human 这是早期人类中 that has really modern human-like characteristics. 第一个真正拥有现代人类特征的种别 Really big brain and indication 头部很大 还有证据显示 that it was a big game hunter. 他们曾...
It's a big old bull porcupine. 这是只肥大的雄性老豪猪 Look how long it's quills are. 看它的刺有多长啊 The bushmen now have an evening meal. 丛林人的晚餐有了着落 I don't particularly like eating porcupine 我不是特别喜欢...
Could eating meat really have caused us to evolve? 难道真是食肉让我们得以进化 About 2.3 million years ago, 大约230万年以前 Homo habilis - the first ancestor we THINK ate meat - appeared. 出现了我们认为最先开始食肉的祖先...
This diet does not provide enough energy for modern humans. 这样的膳食并不能为现代人类提供足够能量 You feel full, but not sort of satisfied. 你会觉得饱 但是不会满足 I'm used to eating a lot more cheese 我通常会吃很多...
But after half an hour's burrowing, the hole gets too small. 但向内挖了半个小时之后 洞已变得太小 Under the boiling Namibia sun, 在纳米比亚炽烈的阳光之下 they start to dig a shaft nearly two metres 他们开始挖掘一条长...