To begin with, they will have to find out whether life has ever existed on the planet of Mars in the past.
首先，他们必须搞清楚火星上是否曾经存在过生命。
But humanity has only ever existed in stupid notions, there's no helping it.
但是人性只是曾经存在于愚蠢的观念之中，对它一点帮助也没有。
The custom of abandoning house ever existed in the prehistoric period of China.
在我国史前时期曾存在着捐弃房屋的风俗。
We are fortunate to live in the richest era that ever existed on the face of the earth.
我们很幸运，生活在地球史上最富裕的时代。
Atlantis has generated feverish speculation as to whether this fabled island ever existed.
传说中的亚特兰蒂斯是否存在，这引发了极度热烈的推测。
If either explanation is true, it could reduce the chances that life ever existed on Mars.
如果某一解释是真实的，它可以减少生活曾经在火星之上存在的机会。
Don't think you are going to conceal thoughts by concealing evidence that they ever existed.
你不要想以掩饰曾经存在的证据来掩饰思维。
Received Pronunciation is the closest accent to "Standard British" that has ever existed in the UK.
在英国，从来就不存在“标准英语”一说，与其最接近的就是标准发音了。
But are there actually that many sacred things or is there any truly sacred thing that ever existed?
但是真的有这么多神圣的东西，或者说是否真的有神圣不可侵犯的东西存在过？
After my death one year, who will remember my face, remember that this world has ever existed, so a person.
在我死后一年，谁会还记得我面孔，记得这个世界上还曾经存在过这么一个人。
Yes, we're talking about the utter collapse of the entire basis by which every society has ever existed on the planet.
没错，这儿说的正是每个存在在这星球上的社会中，最基本的东西的崩塌。
For every injustice that has ever existed, there has always been a group of people fighting to end that injustice.
对于每个曾经存在的不公正，总是有一群人为结束这种不公正而奋争。
Don't join the book burners. Don't think you are going to conceal thoughts by concealing evidence that they ever existed.
别和焚书者一起去。你难道不认为你是在通过抹杀思想存在的证据来抹杀思想吗？
The world economy may be conceived of as following one of three models, none of which has ever existed in pure form.
我们不妨这样来看：世界各国的经济都不外乎三种模式，其中的每一种，一向都不是以纯粹的形式存在的。
Imagine using Mars as a stopover point for water and refueling. As for determining whether life ever existed on Mars.
想象一下，火星可以作为一个补给水和燃料的中转站，同时判断一下火星上是否有生命存在。
Here, as elsewhere, parenting practices are always changing — the Tiger Mother, if she ever existed, is not as fierce as she once was.
家长们的教育手法也在不断变化，“虎妈妈”，即使她曾经存在过，现在也比以前温和多了。
The Editor makes no claim to the factuality of the content, and in fact, cannot prove that the alleged author actually ever existed.
编辑并没有对内容的真实性进行报怨，而且实际上，并不能证明所谓的作者曾经实际存在过。
Smartphones are digital census-takers, creating a more detailed view of society than has ever existed before and doing so in real time.
智能手机如数字普查员，创建的社会观念比以往任何时候都要详细，并不断的在实行。
The tears you cry during Up are totally real, even if absolutely nothing that you see on screen has ever existed in the physical world.
你看《飞屋》时所流的眼泪都是真实的，尽管在你屏幕上所见的一切在现实生活中完全子虚乌有。
No matter how plain and simple you are, there's someone who will surely look at you as if you're the most perfect creature ever existed.
不管你觉得自己多么平凡简单，将来总会有个人见到你，如同你就是地球上现存的最完美的生物。
The church has since been renewed and if the aforementioned gravestone has ever existed in the first place it has probably been lost or destroyed.
此后教堂又被重新翻修，如果前文所说的墓碑真的存在的话，现在多半已经丢失或者被毁坏了。
Water is a key to the question of whether life, even in the form of microbes, ever existed on Mars. On Earth, all known forms of life require water.
水是一个是否有生命存在的关键问题，即使是以微生物的形式，火星上和地球上都曾经存在，所有已知的生命都需要水。
They feel that, therefore, if time extends to the infinite past, then no moment of creation ever existed and therefore it need not be explained.
因此，他们觉得，如果时间会延伸至无穷的过去，那么就不存在创世的时刻，因此也就没有必要加以解释。
At 6.8 billion people, the human race is not only the most populous large mammal on Earth but the most populous large mammal that has ever existed.
人类有68亿人口，不仅是地球上数量最多的大型哺乳动物，而且也是有史以来地球上数量最多的大型哺乳动物。
Nobody will extricate himself from the past , not only because it has ever existed for a certain time , but also because it still exist in one's mind.
没有人会从自己的过去里逃脱出来，不仅仅是因为它曾经真真正正的在某段时间存在过，还因为它至今依然存在人们的内心了。
Nobody will extricate himself from the past , not only because it has ever existed for a certain time , but also because it still exist in one's mind.
没有人会从自己的过去里逃脱出来，不仅仅是因为它曾经真真正正的在某段时间存在过，还因为它至今依然存在人们的内心了。
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