甘比精读-Day4-Yoli

材料：A Brief HIstory of Time-- Chapter 2

1.elliptical：having an oval shape (adj)

(n) ellipse= an oval

2.spiral 

spiral

3. take up （intransive）= continue

原句：any body would take up if it were not driven by some force.

4.hold

(idm 习语)hold `goodremain true or valid 仍然适用; 仍然有效

原句:if one carried out experiments with moving bodies on the train, all Newton's laws would still hold.

5.stub

~ sth (against/on sth):strike (esp one's toe) accidentally against sth hard 使（尤指脚趾）碰到某物

eg: I've stubbed my toe on a rock.我的脚趾碰到石头上了.

6.separate from= independant of 尤其是后者可能想不起来用

7.propagation可以表示观点（抽象）和光（具体）的传播

propagation of light

8.crest

the top or highest part of something such as a wave or a hill

wave crest:波峰

9.infrared adj 红外线

a type of light that feels warm but cannot be seen

10. ether=aether: upper sky

11.postulate

n thing assumed to be true, or accepted as a basis for reasoningor calculation 假定; 假设; 公设

12.pulse n.

single vibration of sound, light, electric current, etc （声波﹑ 光波﹑ 电流等的）一次脉动

也表示脉搏，所以诊脉的表达是take/feel one's pulse

13.cesium

某种化学元素

14,.coordinate n.

either of two numbers or letters used to fix the position of a point on a graph

or map 坐标

15.Piccadilly Circus

Piccadilly Circusis a famous traffic intersection and public space of London's West End in the City of Westminster.

16.Alpha Centauri

半人马座阿尔法星

17.emit v.

give or send (sth) out; discharge 发出光和热

18.radius

radius

19.warp v.

=bend 

curved、warped其实是近义词

20.curvature n.

n [U] curved form; curving 弯曲形状; 弯曲:the curvature of the earth's surface地球表面的曲度