Lesson 40 Waves 歌词

歌曲	Lesson 40 Waves
歌手	英语听力
专辑	新概念英语(第四册)
下载	Image LRC TXT

[00:01.54]	Lesson 40
[00:03.21]	Waves
[00:10.91]	What false impression does an ocean wave convey to the observer?
[00:17.55]	Waves are the children of the struggle between ocean and atmosphere, the ongoing signatures of infinity.
[00:26.32]	Rays from the sun excite and energize the atmosphere of the earth, awakening it to flow, to movement, to rhythm, to life.
[00:36.58]	The wind then speaks the message of the sun to the sea
[00:40.58]	and the sea transmits it on through waves--an ancient, exquisite powerful message.
[00:48.64]	These ocean waves are among the earth's most complicated natural phenomena.
[00:54.50]	The basic features include a crest (the highest point of the wave),
[00:59.77]	a trough (the lowest point), a height (the vertical distance from the trough to the crest),
[01:07.89]	a wave length (the horizontal distance between two wave crests),
[01:13.45]	and a period (which is the time it takes awave crest to travel one wave length).
[01:19.92]	Although an ocean wave give the impression of a wall of water moving in your direction,
[01:25.99]	in actuality waves move through the water leaving the water about where it was.
[01:32.43]	If the water was moving with the wave,
[01:35.08]	the ocean and everything on it would be racing in to the shore with obviously catastrophic results.
[01:42.76]	An ocean wave passing through deep water causes a particle on the surface to move in a roughly circular orbit,
[01:51.32]	drawing the particle first towards the advancing wave, then up into the wave,
[01:57.22]	then forward with it and then--as the wave leaves the particles behind--back to its starting point again.
[02:05.22]	From both maturity to death, a wave is subject to the same laws as any other 'living' thing.
[02:13.11]	For a time it assumes a miraculous individuality that, in the end, is reabsorbed into the great ocean of life.
[02:22.79]	The undulating waves of the open sea are generated by three natural causes:
[02:28.83]	wind, earth movements or tremors, and the gravitational pull of the moon and the sun.
[02:37.07]	Once waves have been generated,
[02:39.21]	gravity is the force that drives them in a continual attempt to restore the ocean surface to a flat plain.

[00:01.54]	第40课
[00:03.21]	海浪
[00:10.91]	海浪给人们留下了什么错误的印象？
[00:17.55]	海浪是大海和空气相斗的产物，一种象征永恒的生动体现。
[00:26.32]	太阳光刺激了地球的大气层，并赋予它能量；阳光使空气开始流动，产生节奏，获得生命。
[00:36.58]	然后，风把太阳的信息带给了大海，
[00:40.58]	海洋用波浪的形式传递这个信息——一个源远流长、高雅而有力的信息。
[00:48.64]	这些海浪属于地球上最复杂的自然现象。
[00:54.50]	他们的基本特征包括浪峰（波浪的最高点）、
[00:59.77]	波谷（最低点）、浪高（从波谷到浪峰的垂直距离）、
[01:07.89]	波长（两个浪峰间的水平距离）、
[01:13.45]	和周期（浪峰走过一个波长所需的时间）。
[01:19.92]	虽然，海浪给人的印象是一堵由水组成的墙向你压来，
[01:25.99]	而实际上，浪从水中移过，而水则留在原处。
[01:32.43]	如果浪和水一起移动的话，
[01:35.08]	那么大海和海里的东西就会向岸边疾涌而来，带来灾难性的后果。
[01:42.76]	穿过深水的海浪使水面上的一个微粒按照一种近乎圆形的轨道移动，
[01:51.32]	先把微粒拉向前移的海浪，然后推上波浪，
[01:57.22]	随着波浪移动，然后——当波浪把微粒留在身后时——又回到了出发点。
[02:05.22]	从成熟到消亡，波浪和其他任何“活动中”的东西一样，都受制于共同的法则。
[02:13.11]	一度它获得非凡的个性，但最终又被重新融进生命的大洋。
[02:22.79]	公海上起伏的波浪是由3个自然因素构成的：
[02:28.83]	风、地球的运动或震颤和月亮、太阳的引力。
[02:37.07]	一旦波浪形成，
[02:39.21]	地心引力是持续不断企图使海面复原为平面的力量。

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