它是理论家在每一次巧妙的旅行之后返回的出发点。
It is the starting point to which the theorist returns after every ingenious excursion.
顺便一说，在爱因斯坦的理论中没有什么能阻止时间旅行，通过它可以走向未来也能回到过去。
Incidentally, there is nothing in Einstein's theory that prohibits time travel, be it into the future or into the past.
考虑到翘曲速度旅行的超理论本质，安全问题从来没有可行性的原理问题重要。
Given the highly theoretical nature of warp speed travel, safety issues usually take a backseat to fundamental questions about its feasibility.
今年早些时候霍金曾表示，开发出能穿越时间旅行的飞船(顺势)将打破爱因斯坦的相对论理论。
Earlier this year, Hawking he said that a spaceship capable of travelling through time - but only forwards - would breach Albert Einstein's theories of relativity.
今年早些时候霍金曾表示，开发出能穿越时间旅行的飞船（顺势）将打破爱因斯坦的相对论理论。
Earlier this year Hawking he said that a spaceship capable of travelling through time - but only forwards - would breach Albert Einstein's theories of relativity.
意大利考古学家对马可·波罗旅行范围的质疑，进一步增加了英国学术界一个理论的影响。
The Italian archeologists' scepticism over the extent of Marco Polo's travels adds weight to a theory put forward by a British academic.
这个理论基础来自于著名试验猜想，双胞胎悖论：乘坐高速火箭飞船旅行的双胞胎哥哥（或弟弟），回到家后要比他的弟弟（或哥哥）年轻。
This theory is the basis of a famous thought experiment known as the twin paradox, in which a twin sibling who travels on a fast-moving rocket ship would return home younger than the other twin.
据一项新的理论说，史前人类也有类似系统，他们利用石圈和其它标记物为穿越英国的旅行者导航。
According to a new theory, prehistoric man navigated his way across England using a similar system based on stone circles and other markers.
此种理论的优秀先驱是在线书商和旅行社：随着主零售店的广泛吸引力，他们也可以提供个性化的服务。
The classic pioneers of this approach are the online bookseller or travel agent: with the mass appeal of a major retailer, they can also offer a personalised service.
不过现如今的许多计算机科学研究更加关注时间效率，特别是NP完全问题中的理论时间边界(比如旅行商人问题，这是完全NP中一个重要的问题，译者注)。
Most of the research in Computer Science these days is devoted to time efficiency, particularly the theoretical time barrier of NP-Complete problems (like the Traveling Salesman problem).
这在理论上是可行的，应为按照狭义相对论，旅行者在接近光速时，时间会变慢，距离也会缩短。
That's doable in theory, because special relativity states that time slows down and distances shrink for travelers approaching light speed.
我的理论是，它一定与航空旅行有关。
另外，通过人的意识的时间旅行不仅在理论上可行，还曾被记录在实验室中。
Moreover, time travel through one's consciousness is not only theoretically possible, but has been documented in the laboratory.
理论上，它还能通过延缓衰老和降低氧气与食物消耗来实现长距离和空间的旅行。
More speculatively, it could make long-distance space travel more feasible by slowing down ageing and reducing the consumption of oxygen and food.
近几十年中物理学家们争先恐后进行理论上时光机器的研究，就证明《时间机器》关于四维宇宙中时光旅行的描写极具预见性。
Its description of time travel in a four-dimensional universe presaged the cottage industry in theoretical space-time machines that has sprung up among physicists in recent decades.
也许你要把建造通量电容器的计划搁置下来：实验室下的大爆炸理论模型表明时间旅行也许根本不可能。
You may want to put plans for building that flux capacitor on hold: a "toy" big bang created in the lab suggests time travel may not be possible after all.
理论上，游轮旅行似乎很有趣。
回到过去并禁止发生任何日后可能证明悖谬的事件，这一理论摆脱了那个令人不安的概念：时间旅行者可能阻止自己的存在。
By going back and outlawing any events that would later prove paradoxical in the future, this theory gets rid of the uncomfortable idea that a time traveler could prevent his own existence.
爱因斯坦对太空旅行的理论有很大的影响。
Albert Einstein had a great influence on the theories of space travel.
空间和时间偏差(6页)讲座时间旅行的理论。
Space and time Warps (6 pages) Lecture on time travel theory.
他决定通过进行时间旅行，而不是让一个物体消失来证明他的理论的正确性。
Yet instead of making an object invisible, he decided to put the theory of time traveling to the test.
因此，移动的距离是不一样的，因为推进器的“滑动”背后的理论距离，它应该与每个旋转旅行。
Therefore the distance traveled is not the same, since the propeller is "slipping" behind the theoretical distance it should travel with each rotation.
该文采用最小旅行时和SIRT法，对煤田中的地应力异常地震层析成像的方法进行成像研究，具有一定的理论价值和现实意义。
This paper, using the least travel time and SIRT method, study on the seismic tomography of stress abnormal in coal field. These have some theoretical and practical values.
本文从市场理论的视角，对我国旅行社行业目前的市场集中度、产品差别化和进入退出壁垒和信息的对称度四个方面进行了分析。
From the perspective of the market, Chinas travel service industry focus on the current market concentration rate, product differentiation and barriers to access to and I.
面对顾客差异化的需求，旅行社管理理论及实践面临许多困惑。
In the face of the difference demand, the theory and practice of travel agency are puzzled.
饭店管理和旅行社管理已有一定的基础，而在景区管理方面，无论理论上和实际操作中都十分薄弱。
It has considerable foundation in hotel management and travel service management. However , both the theory and practical operation in tourist scenic spots are extremely weak.
一些科学家认为时空旅行从理论上是可以实现的，可能未来真的你能够一下子去往将来你想去的时间阶段。但是也不要从现在开始就抱有希望，想着攒钱在将来买一台时光机。
Some scientists say time travel is theoretically possible, at least if you want to jump ahead to the future, but don't start saving up for a time machine just yet.
影片递送问题是旅行商问题和多路旅行商问题的扩展，具有重要的理论和实际意义。
The Film Copy Deliverer Problem is the extension of the Traveling Salesman Problem and the Multiple Traveling Salesman Problem, and it is significance in theory and practice.
影片递送问题是旅行商问题和多路旅行商问题的扩展，具有重要的理论和实际意义。
The Film Copy Deliverer Problem is the extension of the Traveling Salesman Problem and the Multiple Traveling Salesman Problem, and it is significance in theory and practice.
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