人类以前一直都要面对环境变化。
人类以前所认知的创造游戏被完全颠覆了。
The whole game of creation according to man's understanding is turned upside down.
一百万年前，在还没有出现人类以前，这里就有动物。
A million years ago, there were animals here before man came.
宇宙航行员在月球上所冒的危险，是人类以前从来没有遇见的。
The astronauts faced risks on the moon never before met by man.
第一头母狼一度允许杰米在她生小狼后进入狼窝，因为母狼将生产作为秘密的事，人类以前从未尝试过这种行为。
At one point, the alpha female allowed Jamie to enter the wolf den after she gave birth to pups -- behavior never previously attempted by humans since female wolves keep the birthing process private.
我们的身体比以前差，这就是因为我们现在的生存环境和人类以前的生存环境有很大的不同。进化是人类为了适应野外的恶劣生存环境而产生的。
Our own bodies are worse off than most simply because of the many differences between the wilderness in which we evolved and the modern world in which we live.
在人类出现很早以前，地球上就出现了鱼类、爬虫类、鸟类和一些哺乳动物。
Long before Man lived on the Earth, there were fishes, reptiles, birds, insects, and some mammals.
一些律师事务所现在使用人工智能软件来扫描和阅读堆积如山的法律文件，这些工作以前是由高薪的人类律师完成的。
Some law firms now use artificial intelligence software to scan and read mountains of legal documents, work that previously was performed by highly paid human lawyers.
如果早期人类没有像以前那样频繁地移动和融合，他们可能会继续进化成不同的物种。
If early humans hadn't moved and intermingled as much as they did, they probably would have continued to evolve into different species.
从很久很久以前，人类就把海洋当作垃圾桶来使用了。
人类为了养活比以前更多的人口，需要获得可耕地，因此大量砍伐树木。
To feed the larger population, humans need to obtain arable land, so there is a massive clearing of trees.
以前人们认为地球是平的，所以人类从未征服过地球。
Believed to be flat, the earth was never conquered by human beings.
人类很早以前就知道了武器的用处。
表明人类仍在进化的研究以前曾有开展，但是将个人的生育成功与生理变化直接作比较分析，这被认为还是第一次。
Research suggesting humans are evolving has been carried out before, but this is believed to be the first that directly compares reproductive success of individuals with physiological changes.
他们类似的电视时代大概在很久以前，甚至在人类想到要在天空中搜索智慧生命信号之前就到来又过去了。
Their analogue TV age probably came and went long ago, before humans even thought about searching the sky for signs of intelligent life.
人类仍然像以前一样残酷对待农场动物。
研究人员通过检验老鼠的大脑发现了一组基因在表达上的变化，其中一些在以前被认为与人类酒精上瘾有关。
Examining the rats' brains, the researchers found a change in the expression of a number of genes, some of which had previously been linked to alcoholism in humans.
但实际上，史上有很多冰河时代，而且大多在人类出现很久以前。
But in fact there have been many ice ages, most of them long before humans made their first appearance.
你们在地球上的任务就是为以前的这些生世做补偿，给人类带回爱和正义。
Your mission on earth was to make up for these former lives, to bring back love and justice to humanity.
几乎肯定的是，这将扭转人类预期寿命的上升趋势——所以我们的寿命将比以前短。
It is almost certainly going to reverse the rise in life expectancy - so we start living shorter lives than before.
在所有正折磨着大海的破坏分子中，二氧化碳只为其一。从很久很久以前，人类就把海洋当作垃圾桶来使用了。
OF ALL the blights afflicting the sea, carbon dioxide is just one. Man has used the oceans as a dustbin for far too long.
在发明这些陶罐陶钵以前，人类只能将食物储存在地洞里或者树皮树藤编织的篮子里，这样很容易被老鼠之类小动物偷吃，同时也很受天气影响。 比如篮子吧，磨损得快，也容易受干受潮。
Before the discovery of the pot, people stored their food in holes in the ground or in baskets - both vulnerable to thieving creatures and, in the case of the baskets, to wear and to weather.
很久以前，缺乏沟通的时候，人类可能会用这个器官来寻找配偶。
Once upon a time, humans would have used this organ to locate mates when communication was not possible.
以前，当我还是人类的时候，我像所有女人一样梦想着永恒的青春。
Some time ago, when I was a human being I was dreaming about the perennial youth, the thoughts that were so peculiar for every woman.
不过，在大约600年以前，人类女性也开始被称作bitches。
But around 600 years ago female human animals began to be called bitches.
10年以前，解码人类基因序列使一些人感到失望。他们原来希望这个进展能够加速研发严重疾病的治疗方法。
Decoding the human genome a decade ago has disappointed some people who were hoping for the speedy development of cures for devastating illnesses.
200万年以前， 人类的祖先为经常跑路的脚制造出一种生理“设备”--鞋子。 这种设备有很多特点，后跟很大，鞋底有弹性。
About 2 million years ago, the ancestors of modern humans evolved the physiological "equipment" for running--long legs, large buttocks, and springy structures in the feet, among other features.
十万年以前，人类的嘴开始变得越来越小，越来越不向前突起。
Over 100, 000 years ago, the human mouth started getting smaller and protruding less.
十万年以前，人类的嘴开始变得越来越小，越来越不向前突起。
Over 100, 000 years ago, the human mouth started getting smaller and protruding less.
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