请英语达人帮帮忙! 求这一段话的paraphrase The speed at which light travels varies depending on the substances through which it is passing; light travels more slowly when it passes through a denser substance. Refraction occurs when the di

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请英语达人帮帮忙! 求这一段话的paraphrase
The speed at which light travels varies depending on the substances through which it is passing; light travels more slowly when it passes through a denser substance. Refraction occurs when the direction in which light is moving changes as it passes at an oblique angle from on substance(medium) to another of a different density (for instance, between water and air, or air and glass). This is caused by a change in the speed of light as it passes across the boundary between the two media.

光的速度随物质通过是通过更慢,光时气流通过致密物质.时发生折射光的方向移动时变化在倾斜从物质(中)到另一个不同的密度(例如,在水和空气,或空气、玻璃).这是由于改变光的速度是在经过两个媒体之间的界限

在哪个光旅行速度取决于的物质，它通过；当它通过一种高密度物质时，光的传播慢得多。方向中的光移动的变化，它从一个斜角度对 substance(medium) 到另一个不同的密度 (为例之间传递水和空气，或空气和玻璃）时，就会发生折射。由于两种介质之间跨边界传递，这被引起光的速度变化。...

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在哪个光旅行速度取决于的物质，它通过；当它通过一种高密度物质时，光的传播慢得多。方向中的光移动的变化，它从一个斜角度对 substance(medium) 到另一个不同的密度 (为例之间传递水和空气，或空气和玻璃）时，就会发生折射。由于两种介质之间跨边界传递，这被引起光的速度变化。

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depend on
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pass across
a change in

死亡幻觉中的一段英语是什么意思?没有翻译请懂的人帮帮忙请英语达人帮帮忙! 求这一段话的paraphrase The speed at which light travels varies depending on the substances through which it is passing; light travels more slowly when it passes through a denser substance. Refraction occurs when the di 菜鸟求英语达人帮帮忙“请大家举出以-less为后缀的单词”这句话用英语该怎么说啊谢谢 Para Para queen的意思请帮忙翻译这句话：comer para vivir,pero vivir no para vivir/ 请帮帮忙/用狼藉颓唐簌簌写一段话谢谢求懂英语的帮帮忙? 郭富城的 para para 樱之花中para ca 打头的有什么单词?我急着做英语，请各位达人帮帮忙求写景加议论的一段话 100字左右帮帮忙吧水平稍好点的谢啦英语翻译英语，急用，知道的请帮帮忙！英语达人帮帮忙, 英语达人帮帮忙英语达人帮帮忙, 英语达人帮帮忙, 英语达人帮帮忙英语达人帮帮忙 love begins like the springtime with the promise of dreams come true这句话的中文意思这只是一段话,请大家帮帮忙,谢谢啦!