大学英语听力训练：黑洞

⽆忧考英语听⼒频道为⼤家整理的⼤学英语听⼒训练：⿊洞，供⼤家参考:)
[00:00.00]Unit 2 taxt A Black Holes
[00:03.04]⿊洞
[00:06.09]What is a black hole?
[00:07.11] 什么是⿊洞呢?
[00:08.12]Well,it's difficult to answer this question,since the terms we would normally use to describe a scientific phenomenon are inadequate here.
[00:14.11]喔,这个问题很难回答,因为我们通常⽤来描述⼀种科学现象的术语⽤在这⾥不合适.
[00:20.09]Astronomers and scientists think that a black hole
[00:22.73]天⽂学家和科学家认为⿊洞
[00:25.36]is a region of space (not a thing )
[00:27.94]是⼀个空间区域(不是⼀个物体),
[00:30.51]into which matter has fallen and from which nothing can escape not even light.
[00:34.90]物质会陷⼊其中,⽽没有物体可以从中逃逸出来.
[00:39.29]So we can't see a black hole.
[00:41.51]--即使是光也不⾏,所以我们看不到⿊洞.
[00:43.73]A black hole exerts a strong gravitational pull and yet it has no matter.
[00:48.42]⿊洞产⽣很强的引⼒,⽽它却没有物质.
[00:53.11]It is only space--or so we think.
[00:55.59]它只是空间--或者我们认为是这们.
[00:58.07]How this happen?
[00:59.79]这是怎么发⽣的呢?
[01:01.52]The theory is that some stars explode when their density increases to a particular point;
[01:05.74]原理是⼀些星球的密度增长到特定的⼀个值时就会爆炸.
[01:09.96]they collapse and sometimes a supernova occurs.
[01:13.27]它们崩溃时会产⽣超新星.
[01:16.59]From earth,a supernova looks like a very bright light in the sky
[01:20.21]在地球上看上去,超新星就像天空中⾮常耀眼的灯,
[01:23.83]which shines even in the daytime.
[01:26.15]即使在⽩天也能看到其闪光.
[01:28.48]Supernova were reported by astronomers in the seventeenth and eighteenth centuries
[01:32.45]在17,18世纪,天⽂学家就有了关于超新星的记录,
[01:36.42]Some people think that the Star of Bethlehem could have been a supernova.
[01:40.24]有⼈认为圣诞星可能是⼀种超新星.
[01:44.07]The collapse of a star may produce a White Dwarf or a neutron star
[01:48.60]⼀颗星球崩溃可能产⽣⼀颗⽩矮星或⼀颗中⼦星
[01:53.14]a star, whose matter is so dense
[01:58.60]that it continually shrinks by the force of its own gravity.
[02:02.07]--⼀种物质如此致密以致于它在⾃⾝引⼒下不断地收缩的星体.
[02:05.54]But if the star is very large (much bigger than our sun)
[02:08.67]但如果星球很⼤(⽐我们的太阳⼤得多),
[02:11.79]this process of shrinking may be so intense that a black hole results.
[02:15.97]其收缩过程可能很剧烈,以⾄于产⽣了⿊洞.
[02:20.15]Imagine the earth reduced to the size of a marble,
[02:23.53]假想⼀下地球收缩到弹球那么⼤,
[02:26.91]but still having the same mass and a stronger gravitational pull,
[02:30.84]但仍具有同样的质量和更⼤强的吸引⼒,
[02:34.78]and you have some idea of the force of a black hole.
[02:38.20]你就会对⿊洞的⼒量有某种概念.
[02:41.62]Any matter near the black hole is sucked in.
[02:45.16]⿊洞附近任何物质都会被吸进去,
[02:48.70]It is impossible to say what happens inside a black hole.
[02:51.68]根本不可能说出⿊洞⾥⾯发⽣了什么.。