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.
史前人类从未向雷克斯暴龙扔过长矛，但确实猎杀过猛犸象和乳齿象。
Prehistoric humans never threw spears at Tyrannosaurus rex but really did hunt mammoths and mastodons.
也许，首先古人类从未接触过此病毒。
Perhaps, he points out, ancient humans were never exposed to the virus in the first place.
人类从未停止过对广袤无垠的宇宙的探索。
Humans have never stopped exploring the vast expanse of the universe.
人类从未见证过所有文明在一起蓬勃发展，欣欣向荣的时刻。
Humanity has never seen a time when all civilisations prosper together.
但是，抵达人类从未试图生存的地方就是一种奖赏。
But, to reach a place where no humans ever tried to live is the reward.
“人类从未，也永远不会选择放慢速度，”历史学家斯蒂芬·克恩说。
"Humans have never, ever opted for slower," points out the historian Stephen Kern.
南极洲不是一个国家而是一个大陆，是人类从未接触过的地方。
It's not a country, but it is a continent - and Antarctica is a truly untouched place.
火星作为地球的近邻，近40年来人类从未停止过对它的探索。
Mars, earth's nearest neighbour, as nearly 40 years humans never ceased to it.
“人类从未，也永远不会选择放慢速度，”历史学家斯蒂芬？克恩说。
"Humans have never, ever opted for slower," points out the historian Stephen Kern.
如果数学思想在某处等待着被发现，那么即使人类从未构想，一个纯粹抽象的概念也必须存在。
If the mathematical ideas are out there, waiting to be found, then somehow a purely abstract notion has to have existence even when no human being has ever conceived of it.
这次使命将对月球内部从核心到表明的内部构造进行测绘，包括人类从未探索过的月球暗面。
The mission will map the moon from its core to its surface, including the far side of the moon which humans have never explored.
长时间以来地震学家们一致认为，以目前的科学技术，还不能预测地震，而且人类从未准确预知过任何一次大地震。
Seismologists have long concurred, saying the technology doesn't exist to predict a quake and that no major temblor has ever been foretold.
1953年5月29日，丹增·诺尔盖和埃得蒙·希拉里站在了人类从未立足过的世界之巅，这是创造历史的时刻。
History was made on the 29th of May 1953 when Tenzing Norgay and Edmund Hillary stood on top of the world where no men had stood before.
由于在收获、储存和运输方面的不良做法，以及市场和消费者的浪费，据估计，生产的所有食品中有30-50%从未到达人类的胃里。
Due to poor practices in harvesting, storage and transportation, as well as market and consumer wastage, it is estimated that 30-50% of all food produced never reaches a human stomach.
由于小孩子可以造出他们从未听过的句子，乔姆斯基认为人类婴儿天生就有学习语言的能力。
Because young children can make sentences they have never heard before, Chomsky suggested that human infants are born with the ability to learn language.
人类语言中有几个独特的特征，且在很大程度上是其他物种的交流系统中从未发现的。
There're several features peculiar to human language that have, for the most part, never been found in the communication system of any other species.
科学家认为这种病毒是5年前从马传染到狗身上的，但从未感染过人类。
Scientists believe the virus jumped from horses to dogs 5 years ago, but it has never infected a human.
甲鱼开始啃我的马尾辫，之前他们从未见过人类。
The snappers started nibbling at my ponytail, they had never seen humans.
他认为我们都面临一个悖论：一方面，我们知道如果人类不复存在，“宇宙还将延续下去，一如我们从未存在过。”
We are faced, he thinks, with a paradox. On the one hand, we know that when mankind ceases to exist, “the universe will go on as if we had never been”.
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.
实验室标本分析显示，此新病毒此前从未在人类中传播。
Analysis of laboratory samples showed that the new virus had never before circulated in humans.
即使在哲学家们把他们的观念当作为追寻真理所做的纯粹理论阐释，这些观念却从未停止作用为人类生活的指南。
Even when philosophers take their ideas as pure theoretical discourse aimed at finding the Truth, their ideas have never stopped functioning as guides to human life.
因此水晶矿物领域和人类有复杂的相关性，就像一个人从未其它人失去接触或微妙的交流一样。
As such the realms of the crystalline minerals and humanity are intricately related, such that one is never out of contact or subtle communication with the other.
这块生机勃勃的雨林从未被明确标注过界线，鲸鱼、野狼、熊以及人类在其中的海峡和密林中尽情繁衍。
Whales, wolves, bears, and humans thrive in the rich Marine channels and forests of the Great bear, whose boundaries have never been precisely defined.
尽管这个很重要，研究人员却从未发现人类大脑编排日常事务的机理。
But important as it is, researchers have never understood the mechanism by which humans index the happenings of everyday life.
而博纳病毒属于一种之前从未在人类基因组中被发现的病毒。
But the borna virus belongs to a kind of virus that has never been found in the human genome before.
而博纳病毒属于一种之前从未在人类基因组中被发现的病毒。
But the borna virus belongs to a kind of virus that has never been found in the human genome before.
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