Space and Tme
Vocabulory
Slope
a piece of ground or a surface that slopes
斜坡，斜面
a steep slope陡坡
She looked back up the grassy slope.她回头望了一眼那绿草如茵的坡地。
the angle at which something slopes in relation to a flat surface
斜度，坡度
Explicit
expressed in a way that is very clear and direct
清楚明确的；直截了当的
The contrast could not have beenmade more explicit.这个对比再清楚不过了。
language or pictures that are explicit describe or show sex or violence very clearly
〔描绘性或暴力的语言或画面〕清晰露骨的
Elliptical
having the shape of an ellipse
椭圆的；椭圆形的
Kepler published his discovery of the elliptical orbits of planets in 1609. 1609年开普勒公布他的发现，认为行星轨道为椭圆形。
elliptical speech or writing is difficult to understand because more is meant than is actually said
〔言辞或文章〕晦涩的，隐晦的
The language is often elliptical and ambiguous.语言经常是隐晦和模棱两可的。
Spiral
a line in the form of a curve that winds around a central point, moving further away from the centre all the time
螺线，螺旋线
to move in a continuous curve that gets nearer to or further from its central point as it goesround
螺旋式上升[下降]
The damaged plane spiralled to the ground.受损的飞机盘旋坠地。
if a situation spirals, it gets worse, more violent etc in a way that cannot be controlled
〔形势〕急剧恶化
ifdebt or the cost of something spirals, it increases quickly in a way that cannot be controlled
〔债务或费用〕急剧而失控地上升
Stub
the short part of something long and thin, such as a cigarette or pencil, that is left when the rest has been used
〔烟、铅笔等的〕残头，残根
the part of a ticket that is given back to you after it has been torn, as proof that you have paid
票根，存根
a ticket stub票根
stub your toe
to hurt your toe by hitting it against something
碰伤脚趾
Unambiguous
a statement, instruction etc that is unambiguous is clear and easy to understand because it can only mean one thing
清楚的，明确的，不含糊的
Crest
the top or highest point of something such as a hill or a wave
〔山或波浪的〕顶峰
t took us over an hour to reach the crest of the hill.我们花了一个多小时到达山顶。
a special picture that is used as a sign of a family, town, school, or organization
饰章，徽饰
to reach the top of a hill or mountain
到达〔山顶〕
They crested a wooded hill shortly before sunset.太阳就要落山之前，他们登上了一座树木茂盛的小山巅。
ether
a clear liquid used in the past as an anaesthetic to make people sleep before an operation
醚；乙醚
Postulate
to suggest that something might have happened or be true
提出〔理论等〕，假定，假设
postulate that
It has been postulated that the condition is inherited.有人认为这种疾病可能是遗传的。
something believed to be true, on which an argument or scientific discussion is based
假定，假设，公理〔被认为理所当然的事实，是推论的基础〕
RELTDHYPOTHESIS
[+ of]
the basic postulates of Marxism马克思主义的基本假设
coordinate
one of a set of numbers which give the exact position of a point on a map, computer screen etc
坐标
equal in importance or rank in a sentence
〔在句中的重要性或位置〕同等的，并列的
coordinate clauses joined by ‘and’用and连接的并列分句
2.involving the use of coordinates
坐标的
Piccadilly
(英国伦敦的)皮卡迪利大街(以其时髦的商店、俱乐部、旅馆和住宅著称)
Galaxy
one of the large groups of stars that make up the universe
星系
the Galaxy
the large group of stars which our Sun and itsplanets belong to
银河，银河系
Velocity
the speed of something that is moving in a particular direction
速度
the velocity of light光速
Geodesic
having a shape or structure made from small flat pieces, usually triangles or pentagons, that are put together to form curves
网格式的〔指立体形状或结构由小的平面形状构成的〕
Curve
a line that gradually bends like part of a circle
曲线，弧线
a line on a graph that gradually bends and represents a change in the amount or level of something
〔图表上显示变化的〕曲线
•The curve illustrates costs per capita.这条曲线显示人均费用。
demand/supply curve
•The market demand curve has increased.市场需求曲线呈上升态势。
a bend in a road, river etc
〔道路、河流等的〕弯曲处
Paradox
a situation that seems strange because it involves two ideas or qualities that are very different
自相矛盾（的情况）
It’s a paradox that in such a rich country there can be so much poverty.在如此富有的国家却有这么多的贫穷现象，真是矛盾。
[C] a statement that seems impossible because it contains two opposing ideas that are both true
悖论，似非而是的说法
The paradox is that fishermen would catch more fish if they fished less.悖论就是:如果渔夫减少捕鱼，反而会打到更多的鱼。
After reading the chapter, I reviewed much knowledge about physics and enrich a lot of conception about the new theory. What is much thoughtful is that about some so-called similar theory, such asspecialrelativity. It has been a common sense that it was found byEinstein. However, few ones know the deeper details about it , including me. Many descriptive or logical sentences are likely to be abstract for me. Sometimes It is tough to read it in Chinese. Moreover, reading it in English.. In the theory of relativity, the absolute space and absolute time does not exist.It means"static" is relativerather than absolute. For example , at the same moment, our situation or location is changing. In our daily life, time elapsed changelessly. While it is said that timeis the accessory.So it is hard to understand time is relative.
To be honest, when I receive the homework at the first time , I was astonished by the heavy burden that it has 12 pages. It seems to be impatient for me to read these related to physics. Anyway, I finished it narrowly.
