The problem with studying humanity's fossil record is that it is so sparse: a jawbone here; a braincase there.

Along with bigger teeth and a studier body, the dire wolf also had a smaller braincase.

这种古狼与现代的灰狼相比，具有相对宽而短的头部，脑壳较小，同时它的牙齿也更大，身体更为健壮结实。

They hang loosely underneath the braincase, ready to execute their signature bite.

它们悬挂在脑壳下方，随时准备执行标志性的一击。

One concern is that the fossil skull is fairly small, with a somewhat lower braincase capacity than in modern humans.

顾虑之一，是这件颅骨化石相对较小，脑容量比现代人小。

Economists Sandra black and Elizabeth Brainerd found that the surge in international trade, which has increased competitive pressures in many markets, has reduced the ability of firms to discriminate against women.

经济学家桑德拉布莱克（sandra black）和伊丽莎白布雷纳德（elizabeth brainerd）发现，国际贸易的蓬勃发展，加大了很多市场中的竞争压力，削弱了公司歧视女性的能力。

As you can probably guess from the name, this disease is a severe, acute form of diarrhea first described after an outbreak in Brainerd, Minnesota.

你可以从名称中大致推断出这种疾病是一种严重的急性腹泻，在明尼苏达由布雷纳德首次进行了描述。

David Brainerd had it in the woods of North America.

勃兰纳戴维的基立在北美洲森林里。

Penny: How is that not a brainiac?

佩妮：那还不是天才啊？

Emily told me. You're the brainiac.

艾米丽跟我说了你是学霸

A brainiac, with a cranium packed, full of more uranium

一个材质非凡的人，头盖骨被开了，并注满了铀

So everybody can call me a freak and a brainiac?

大家好能够叫我怪胎和资优生吗？

I mean, everyone knows what a brainiac you are.

我的意思是，你是公认的聪明人。

They begin to suspect you are a brainiac with limited social skills.

他们或许开始怀疑，你的智商不错，但情商有限，不懂社交。

But night owls needn't despair because a previous study found them to be brainier than those who leap out of bed when it is still dark.

但“夜猫子”们也不必沮丧。之前的一项研究表明，晚睡的人比那些天还没亮就起床的人更聪明。

The standard story is that our ancestors first left the apes behind to become australopithecines, which grew more sophisticated and brainier to become us.

标准的说法是，我们的祖先先是从猿进化成了南方古猿，后来又变得更加复杂和聪明，最终变成了我们现在的样子。

Previous studies have found evidence of a 'beauty premium', with good-looking people judged to be brainier and more trustworthy.

先前的研究发现，长相漂亮的求职者会让人觉得她很聪明，值得信赖。

Well, that's because women with a curvy figure are brighter and give birth to brainier kids, according to a new study.

一项最新研究发明，那是由于曲线优美的女性更伶俐，并且所生的孩子也更伶俐。

This connection between size, skills and productivity is not simply due to brainier workers choosing to live in more populous places.

这种城市规模，技术和生产率之间的联系并不仅仅是由于更聪明的工人选择居住在人口更密集的地区所造成的。

Before we congratulate ourselves, though, let's acknowledge that brainier hobbies have never been that popular.

在祝贺自己之前，我们不妨先承认，更高雅的爱好从来都没有那么流行。

I suspect such requirements have made most women brainier than anyone can measure, and programmed to keep it a secret.

我认为，这样的要求已经使大多数女人比任何人所能想到的都聪明，而且还设法不让别人知道这一点。

Does being more beautiful make you brainier, or does being brainy make you any less beautiful?

到底是美貌让人变聪明，还是聪明使人显得更其貌不扬？