大学英语自学教程 下册 un02

[04:07.20]爱因斯坦声称物质和能量是可以互相转化的,
[04:10.98]so that there is no "absolute" time and space.
[04:14.01]因此就没有绝对的时间和空间,
[04:17.04]There'are no constants at all,
[04:19.12]根本不存在永恒,
[04:21.20]and measurements of time and space depend on the position of the observer
[04:24.67]时间和窨的徇取决于观测者所在的位置,
[04:28.15]They are relative.
[04:29.62]它们是相对的.
[04:31.10]We do not yet fully understand the implications of the relativity theory
[04:34.82]我们还没有完全理解相对论的含义,
[04:38.54]but it is interesting that Einstein's theory provided a basis
[04:45.41]for the idea of black holes
[04:47.69]但有意思的是,在天文学家着手发现黑洞的存在证据之前,
[04:49.96]before astronomers started to find some evidence for their existence.
[04:53.68]爱因斯坦就提供了黑洞这种想法的基础.
[04:57.40]It is only recently
[05:01.04]that astronomers have begun specific research into black holes.
[05:04.21]只是近来科学家才开始了对黑洞的具体的研究.
[05:07.38]In August 1977,a satellite was launched to gatter data
[05:11.46]1977年8月,发射了一颗卫星
[05:15.53]about the l0 million black holes which are thought to be in the Milky Way.
[05:19.36]去搜集关于被认为是在银河系的1000万个黑洞的数据.
[05:23.19]And astronomers are planning a new observatory to study
[05:26.16]天文学家正在计划一个新的天文台
[05:29.14]the individual exploding stars believed to be black holes.
[05:32.83]用以研究个别的存在爆炸的被相信要变为黑洞的星球.
[05:36.51]The most convincing evidence of black holes
[05:42.07]comes from research into binary star systems.
[05:45.01]黑洞最有说服力的证据恶臭对双星系的研究.
[05:47.95]Binary stars,as their name suggests
[05:50.33]双星,正如它们的名字所表明的,
[05:52.71]are twin stars whose position in space affects each other.
[05:56.39]是两颗在窨位置上互相影响的星球.
[06:00.07]In some binary systems,
[06:02.45]在一些双星系里,
[06:04.83]astronomers have shown that there is an invisible companion star,
[06:08.55]天文学家已经表示这里有一颗看不到的伴星,
[06:12.27]a "partner" to the one which we can see in the sky.
[06:15.21]即我们可以在天空中看到的一颗星的伙伴.
[06:18.15]Matter from the one which we can see is being pulled towards the companion star.
[06:22.72]来自我们所看到的星的物质正被吸引到伴星去.
[06:27.29]Could this invisible star,which exerts such a great force,be a black hole?
[06:31.77]这颗产生如此巨大力量的看不见的星会是黑洞吗?
[06:36.25]Astronomers have evidence of a few other stars too which
[06:39.12]天文学家还有其他一些星球的证据,
[06:42.00] might have black holes as companions.
[06:44.38]这些星可能与黑洞相伴.
[06:46.75]The story of black holes is just beginning.
[06:49.43]对黑洞的研究刚刚开始,
[06:52.11]Speculations about them ate endless.
[06:54.75]各种推测会层出不穷.
[06:57.38]There might be a massive black hole
[07:02.24]at the center of our galaxys wallowing up stars at a very rapid rate.
[07:05.82]在我们银河系的中心很可能存在着一个巨大的黑洞正以极快的速度吞食着星球.
[07:09.40]Mankind may one day meet this fate.
[07:12.07]人类有一天也会面临被事在人为的命运.
[07:14.73]On the other hand,scientists have suggested that very advanced technology
[07:19.12]而科学家也提出,
[07:23.51]could one day make use of the energy of black holes for-mankind.
[07:27.09]有一天高科技会利用黑洞的能量为人类服务.
[07:30.66]These speculations sound like science fiction.
[07:33.49]这些设想听起来像科幻小说,
[07:36.31]But the theory-of black holes in space
[07:38.95]但空间中黑洞的理论
[07:41.58]is accepted by many serious scientists and astronomers.
[07:44.71]被许多严谨的科学家和天文学家接受.
[07:47.83]They show us a world which operates in a totally different way from our own
[07:52.15]他们展示给我们一个完全不同于我们自己的世界运行方式的世界,
[07:56.47]and they question our most basic experience of space and time.
[08:00.25]并对我们的最基本的时空经验提出了疑问.
[08:04.02]text B   Worlds within Worlds
[08:06.80]世界中的世界
[08:09.59]First of all let us consider the earth (that is to say, the world)
[08:12.83]首先让我们把地球(也就是说,世界)
[08:16.07]as a planet revolving round the sun.
[08:18.04]看做围绕太阳运行的一颗行星.