The caveman who always assumed there was a lion behind the next rock would usually be wrong, but he'd be much more likely to survive and reproduce than one who always assumed the opposite.

总是假设下一块石头后面有一头狮子穴居通常是错误判断，但他比总是比想法乐观更有可能生存和繁衍。

It's the same story with other troglobites.

其它穴居动也是同样情况。

Eleven and a half months of hibernation has taken its toll, and the sun is harsh as these nocturnal, cave-dwelling creatures must greet daylight.

十一个半月冬眠，让他们脚趾僵硬。阳光此耀眼，让这些穴居动必须适应日光。

Among the bones of hyenas, elephants, horse and other animals, scientists say they found the remains of nine Neanderthals or neandertalls, a type of primitive human.

鬣狗、大象、马和其他动骨头中，科学家称，他们发现了九具尼安德塔或穴居遗骸，这是类一种。

Some believed that snakes evolved on land, and that their ancestors were small, burrowing lizards.

一些科学家认为蛇从陆地上进化而来，它们祖先是小，穴居蜥蜴。

Eunotosaurus was likely a burrowing creature, digging homes for itself in what's now southern Africa.

正南龟可能是穴居动，今南部非洲位置为自己挖掘栖身之所。

" I don't see the caveman being in this movie."

“我看不出这个穴居能演这部电影。”

I've found what I believe to be a cave.

我猜我发现这是一个穴居。

What happens over time now in our modern era, there are so many metaphorical tigers.

随着时间推移，现代生活与之前相比发生了巨大改变，我们遇到了新型压力问题，和当时穴居遇到老虎是一样状态。

Well that sounds kinda cool, it's kinda like The Hobbit.

听起来挺酷啊。有点像是霍毕特啊（《指环王》中穴居小矮）。

I thought this must have gone back to the caveman.

我觉得这个问题可以一直追溯到穴居那会儿。

Many creatures are burrowing away to escape the cold.

许多生开穴居以躲避严寒。

Based on these facts, scientist Nikolai Kardashev developed a method of categorizing civilizations, from cave dwellers to gods ruling over galaxies: The Kardashev Scale; a method of ranking civilizations by their energy use.

基于这些事实，科学家尼古拉·卡尔达肖夫发明了一套给文明分类方法——从穴居到统治整个星系神灵——卡尔达肖夫指数，一套通过能量使用来对文明进行排名方法。

Scientists still have to identify the causes of all injuries and how the injured were cared for. That could give us more understanding into the behavior of both Neanderthals and ancient humans, she wrote.

科学家们仍然要对所有受伤成因进行鉴定以及研究伤者受到怎样照顾。她写到，这将让我们对穴居和古类行为有更深入理解。

Back in my caveman days, 300 000 years ago, when homo sapiens first started depending on who you ask, yes, it would have killed me because now I'm ostracized from the group.

回到穴居时代，30 万年前，当智第一次开出现，根据你问对象，是，它会杀了我，因为现我被这个群体排斥了。

And since cavemen probably spent more time hunting saber-tooth tigers than they did creating wormholes, we probably won't be traveling back there anytime soon, because there's just no way to get there.

由于穴居花猎杀剑齿虎上时间可能多于他们创造虫洞时间，我们可能不会很快回到那里，因为根本没有办法到达。

From the bees that pollinate them to the mice and rats that eat their fruits, to the burrowing owls and South American gray foxes that eat the rodents, this ecosystem is dependent upon these wild tomatoes.

从为它们授粉蜜蜂到吃它们果实老鼠，再到吃啮齿动穴居猫头鹰和南美灰狐，这个生态系统依赖于这些野生西红柿。

A series of grooves carved into the wall of a cave in Gibraltar may be proof that Neanderthals, the extinct cousins of modern humans, were more creative and intelligent than previously thought.

雕刻直布罗陀一个洞穴墙壁上一系列纹路或许可以证明已灭绝现代近亲穴居比此前认为更有创造力和智慧。

Archaeologists say they have identified what may be one of the last ornaments won by Neanderthal people before they were displaced by modern humans.

考古学家表示他们鉴别出可能是穴居留下最后一件饰品。穴居后来被现代所取代。

All the work was done by the squaws, for the Indian braves, like the early cave men, had to attend to the hunting and fighting.

所有工作都是由女性完成，因为印第安勇士和早期穴居一样，必须参加狩猎和战斗。