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light travels

网络光比声音传播快得多；浪漫之旅

light travels

light travels

light travels

光比声音传播快得多

浪漫之旅

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1

To measure astronomic distances one takes as a unit that distance which light travels in a year .

为了度量天文距离，人们把光在一年中走过的距离当作一个距离单位。

2

That light travels in straight lines in known to all. It's known to all that light travels in straight lines .

众所周知，光沿直线运行。

3

On their journey across the universe , the wavelengths of light have stretched. The farther the light travels, the more stretched it gets .

这表明，在光线穿越宇宙向地球进发的旅程中，其波长变长了。

4

One light year is the distance that light travels in a year .

一个光年是光在一年移动的距离。

6

A light-year is the distance light travels in a year , or roughly 6 trillion miles (10 trillion kilometers ).

光年是指光传播一年时间的距离，相当于 10万亿公里（6万亿英里）。

7

It is known to all that light travels faster than sound .

众所周知，光比声传播得快。

9

The only constant , he asserts , isc, the speed at which light travels through empty space.

他断言，唯一的常数是 c ，也就是光在穿越真空时所拥有的速度。

10

Polarization : All light travels in the form of waves , and these waves vibrate in all directions along its path .

偏光化：光是以波动形式前进，并沿着前进路线向四方八面振动。

11

He said that light travels much faster than sound .

他说光比声音传播得快。

12

She said that light travels faster than sound .

她说，光比声传播得快。

13

Mr Li told me (that )light travels faster than sound .

李老师告诉我光的传播比声音快。

14

15

Light travels slower through water , glass , even air, than through a vacuum .

光在水、玻璃，甚至是空气中的传播速度比起在真空中慢得多。

18

"Light travels faster than sound , " David said to her .

“光比声传播得快，”大卫对她说。

19

The scientist proved that light travels through space in a straight line .

这位科学家证明了光在太空中沿直线传播。

20

Light travels faster than sound right or not? why ?

光速比声速快正确与否？为什么？

21

24

Light travels faster than sound . That 's why most people seem bright until you hear them speak .

光比声音快。这就是大部分人在说话之前看起来都很聪明的原因。

29

light travels in a straight line is known to all.

众所周知，光沿直线传播。

30

Professor Chen said, "Light travels faster than sound . "

陈教授说：“光比声音的传播速度快。”

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