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Scientific American 60 Second Science听抄(有音频文件) [复制链接]

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1411
发表于 2007-8-11 23:06:13 |只看该作者
You can lie down on the job and still use some science very early Monday morning, because the first few hours of August 13th thought the best time to view the annual Perceid meteor shower.
And concurrent New Moon means that condition should be very good to see a lot of shooting stars.
The following few day should provide a good viewing too. The bright streaks of light you’ll see in the sky are particles of dust ejected by the commit Swift Tuttle, burning up about 80 miles over head. We pass through this cosmic rubble at same time each year. The particles hit the atmosphere about 37 miles per second, which creates a white hot streak of super heated air. The shooting stars seem to be coming out to the constellation Perseus near Cassiopeia, hence the name 'Perceids'.
The dust molds are mighty small ranging from the size of the grain of sand to perhaps a pea. In fact to get an idea of the estimated size, color and texture of the particles, just open a box of great nuts, which you can then have for breakfast.
So find some open sky, lie down and enjoy.  
:) :)
提示词汇:
Perseus(英仙座)
Cassiopeia(仙后座)
Andromeda(仙女座)
Comet Swift-Tuttle(斯威夫特-塔特尔彗星)
天文学的词语比较多...我自己也是GOOGLE了半天才连蒙带猜 写出来的 呵呵

____________________________
第一次在这发帖..... 看到这篇文没什么太多人发..所以发上来参考一下  ^_^
请多指教
...........想换ID....残念....但是GMAIL和HOTMAIL都被注册了.......

[ 本帖最后由 上弦燕飞 于 2007-8-11 23:23 编辑 ]

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1412
发表于 2007-8-12 01:14:48 |只看该作者

回复 #1391 wcr27 的帖子

有些疑问 望解答 on the job adv. 工作着,留心着;警惕着的意思 在这里是否是留心着的意思??
actually, "to lie down on the job" is an informal way to say "to do less than one could or should do; shirk one's obligations".

另外 do some science 是否是 后面所指的  view the annual Perseid meteor shower ??
Yes, you are right.

最后的 great nuts 是个什么食物啊?
Personally, I don't think great nuts are somthing special, just some good nuts, like peanuts, walnuts, cashewes nuts, etc..

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1413
发表于 2007-8-12 08:53:07 |只看该作者
cool!

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1414
发表于 2007-8-12 12:13:21 |只看该作者

回复 #1396 kelediguo 的帖子

:)   补充:

Dust motes – Did anyone get this right?

Grape-Nuts is a brand name of breakfast cereals. You should go the supermarket and pick up a box. They taste pretty good. (http://www.kraft.com/100/innovations/grapenuts.html)
https://bbs.gter.net/thread-654238-73-1.html

正确听力方法请参见724,698,635搂  

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1415
发表于 2007-8-12 12:19:20 |只看该作者
[fly]怎么现在11号的还没有出来啊?等不及了,听了一段8月7号的

The food in beverage industry spend more than ten dollars a year in the U.S to market their

products to children. And it's money well spend for them, by age two, children may already
harbor prefoerences to certain brands and kids under six can often a sociate brands with
specific products such as Mcdonald's. Here is a powerful the Mcdonald's brand is, according to a study just published in the august Journal Archives PBH...medicine, pre-school kids all given exact the same food in either unmarked packages or Mcdonald's packaging, but the kids, all
between 3 and 5, said they like the tast better when the food looked like was from Mcdonald's when other food tasted was carrots. What's up, it's that the kids said they like the puote
Mcdonald's carrots are quote better than just plain carrots by more than two to one. And the
more TV sets in kids' home, the more likly here she was to prefer the food Mcdonald's bags.
[/fly]

嘿嘿 就当给麦当劳作广告了,其实不想的

beverage 饮料
没有什么可以阻挡!

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1416
发表于 2007-8-12 12:32:50 |只看该作者
cool!
California dreaming~~~ Mystery of Nanocrystals

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1417
发表于 2007-8-12 12:53:33 |只看该作者
提示: 作者被禁止或删除 内容自动屏蔽

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1418
发表于 2007-8-12 14:42:18 |只看该作者

August 10, 2007: 60-Second Science
Good Seats Available For Perseid Meteor Shower

The early hours of August 13 will provide excellent views of the annual Perseid meteor shower, when particles of comet dust hit our atmosphere at 37 miles per second. Steve Mirsky reports


You can lie down on the job and still do some science very early Monday morning, because the first few hours of August 13 thought(13th are) the best time to view the annual  [ˈænjuəl] Perseid Meteor shower and the concurrent new moon means that condition should be very good to see a lot of shooting stars. A following few days should provide good viewing[vju:]too. The brightest streaks of light you see in the shy are particles of dust ejected by the comet Swift-Tuttle burning up about 80 miles overhead. We pass through the cosmic  [ˈkɔzmik] rubble at the same time each year. The particles hit the atmosphere at about 37 miles per second, which creates a white hot streak of super heated air. The shooting stars seem to be coming out of the constellation Perseus near Cassiopeia, hence the name Perseids. The dust motes are mighty small ranging from the size of a grand(grain) of sand to perhaps a pea. In fact, to get a idea of the estimated size, color and texture of the particles, just open a box of great nuts, which you can then have your breakfast. So find some open shy, lie down and enjoy.

NEW Words:
streak  [stri:k]n.条纹;个性特征 vi.疾驶 vt.加条纹
cosmic   [ˈkɔzmik]a.宇宙的;无比巨大的,无穷尽的
rubblen.破瓦
mote [məut]n.微料,微尘
mighty [ˈmaiti]a.强大的
concurrenta.一致的;同时的

没听出:
and still do some science
brightest
hence the name Perseids.
texture of the particles
then have your breakfast
to get a idea of
August 13 thought(13th are)
shooting stars

拼写:
a grand(grain) of sand



reading material:
summer’s best meteor show

Every August, just when many people go vacationing in the country where skies are dark, the best-known meteor shower makes its appearance.

The annual Perseid meteor shower is expected to be at its best this year, producing one or two meteors per minute during peak hours.

"It's going to be a great show," said Bill Cooke of NASA's Meteoroid Environment Office at the Marshall Space Flight Center in Alabama.

August is also known as the month of "The Tears of St. Lawrence." Laurentius, a Christian deacon, is said to have been martyred by the Romans in 258 AD on an iron outdoor stove. It was in the midst of this torture that Laurentius cried out: "I am already roasted on one side and, if thou wouldst have me well cooked, it is time to turn me on the other."

The saint's death was commemorated on his feast day, Aug. 10. King Phillip II of Spain built his monastery place, the "Escorial," on the plan of the holy gridiron. And the abundant shooting stars seen annually between approximately Aug. 8 and 14 have come to be known as St. Lawrence's "fiery tears."

The reality
We know today that these meteors are actually the dusty remains left behind by Comet Swift-Tuttle.

Discovered back in 1862, and most recently observed in 1992, this comet takes approximately 130 years to circle the sun. And in much the same way that Comet Tempel-Tuttle leaves a trail of debris along its orbit to produce the Leonid meteors of November, Comet Swift-Tuttle produces a similar debris trail along its orbit to cause the Perseids.

Indeed, every year during mid-August, when Earth passes close to the orbit of Swift-Tuttle, the material left behind by the comet from its previous visits rams into our atmosphere at approximately 37 miles per second (60 kilometers per second) and creates bright streaks of light in our midsummer night skies.

Perfect prospects
According to the best estimates, this year Earth is predicted to cut through the densest part of the Perseid stream sometime around 2 a.m. ET on Monday. That corresponds to 11 p.m. PT Sunday for those living in the western United States or Canada.

The interval when the meteors will be falling at their highest rates will likely last several hours or more on either side of these times.

As a result, it is the late-night hours Sunday, on through the first light of dawn Monday, that holds the greatest promise of seeing a very fine Perseid display.

The moon, whose bright light almost totally wrecked last year's shower, will have zero impact this year. The moon will be new on Sunday, meaning that there will be no interference from it at all.

Perfect!

What to expect
A very good shower will produce about one meteor per minute for a given observer under a dark country sky. Any light pollution or moonlight considerably reduces the count.

The August Perseids are among the strongest of the readily observed annual meteor showers, and at maximum activity the display nominally yields 90 or 100 meteors per hour. Observers with exceptional skies often record even larger numbers. Typically during an overnight watch, the Perseids are capable of producing a number of bright, flaring and fragmenting meteors, which leave fine trains in their wake.

On the night of shower maximum, the Perseid radiant is not far from the famous "Double Star Cluster" of Perseus (hence the name, "Perseid"). Low in the northeast during the early evening, it rises higher in the sky until morning twilight ends observing. Shower members appearing close to the radiant have foreshortened tracks; those appearing farther away are often brighter, have longer tracks, and move faster across the sky.

About five to 10 of the meteors seen in any given hour will not fit this geometric pattern, and may be classified as sporadic or as members of some other (minor) shower.

Plan your time
Perseid activity increases sharply in the hours after midnight, so plan your observing times accordingly. We are then looking more nearly face-on into the direction of the Earth's motion as it orbits the sun, and the radiant is also higher up.

Making a meteor count is as simple as lying in a lawn chair or on the ground and marking on a clipboard whenever a shooting star is seen. Watching for the Perseids consists of lying back, gazing up into the stars, and waiting. It is customary to watch the point halfway between the radiant (which will be rising in the northeast sky) and the zenith, though it's perfectly all right for your gaze to wander.
Counts should be made on several nights before and after the predicted maximum, so the behavior of the shower away from its peak can be determined.
Usually, good numbers of meteors should be seen on the preceding and following nights as well. The shower is generally at one-quarter strength one or two nights before and after maximum. A few Perseids can be seen as much as two weeks before and a week after the peak. The extreme limits, in fact, are said to extend from July 17 to Aug. 24, though an occasional Perseid meteor may be seen almost anytime during the month of August.
In addition to the Perseids, some skywatchers will have an opportunity to view another potentially strong meteor display at the beginning of September: the Aurigid meteors. We'll have more details on this in next week's Night Sky, so stay tuned!

2007 Space.com

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1419
发表于 2007-8-12 14:54:25 |只看该作者
托福好好考!

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1420
发表于 2007-8-12 15:12:39 |只看该作者
rm]rtsp://your.com/example.rm[/rm]我发了一个帖子,怎么会动啊??:funk:
没有什么可以阻挡!

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1421
发表于 2007-8-12 15:48:24 |只看该作者
大家能上传大的附件的,能不能把最近的60scientic听力文件上传一下阿!谢谢了
我是校园网好多网站都上不去的!谢谢了!
理想的天空有我努力的身影……

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1422
发表于 2007-8-12 16:00:16 |只看该作者
August 10

You can lie down on a job and still do some science very early Monday morning, because the first few hours of August 13th is the best time to view annual Perseid meteor shower. And a concurrent new moon means that the condition should be very good to see a lot of shooting stars. The following few days should provide good view too. The bright streaks pf light you’ll see in the sky are particles of dust ejected by the comic Swift-Tuttle, burning out about 80 miles over head. We pass through this cosmic rubble at the same time each year. The particles hit atmosphere at about 37 miles per second, which create a white hot streak of super heat there. The shooting stars seem to be coming from constellation Perseid near Cassiopeia, hence the name Preseid. The dust motes might be small range from size of a grain of sand to perhaps a pea. In fact, to get an idea of the estimated size, color and texture of the particles, just open a box of great nuts, which you can have a breakfast. So find more in open sky, lie down and enjoy.

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1423
发表于 2007-8-12 16:53:53 |只看该作者
收到,谢了

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1424
发表于 2007-8-12 17:31:35 |只看该作者
这篇文章的倒数第二句应该是 which you can then have  FOR breakfast.......
看了这么多的似乎就没几个人写出来...
就算从纯语法来分析, 很多人写的, which you can have A breakfast也不对嘛....怎么能这样写重句....
:loveliness: :loveliness:

[ 本帖最后由 永夜の翼 于 2007-8-12 17:33 编辑 ]

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1425
发表于 2007-8-12 21:57:23 |只看该作者

回复 #1408 永夜の翼 的帖子

good catch   :)
https://bbs.gter.net/thread-654238-73-1.html

正确听力方法请参见724,698,635搂  

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RE: Scientific American 60 Second Science听抄(有音频文件) [修改]

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