Scientific American 60 Second Science听抄（有音频文件）

kelediguoUID: 149939

Thanks!:)

kelediguoUID: 149939

Thanks! :loveliness:

EHSSSUID: 2348947

August 9

Some studies have hinted that athletes might be better off if they can better dump off some of the heat their muscles generated. Now comes new research that just add credence to the idea that athletes indeed should just chill. Other studies have tested the idea of cooling down athletes after they work out still improve recovery. But this study looked at the effect of chilly before they work out still improved performance. Scientists from a couple of German universities put more than 50 athletes into a cooling chamber where the temperature was frosty -120 degrees. The athletes stayed in deep freeze for two and half minutes. They then did an endurance run at 90% of their maximum capacity. After 6 months the cool athletes showed much better results and an increased oxygen-carrying capacity. The scientists think that chilly slow the inevitable rising body temperature that impedes performance. Chilly also conserves body fluids because the competitor does not have to swell as much to cool down. Look for icy athletes at the Summer Olympics next year in Beijing.

pwyw000UID: 2238079

楼主加油阿

nobodyliangUID: 2345429

August 13, 2007

第一次尝试听写,  好多地方都不确定~ 献丑了

If you’d ever driven on a dirt road, you have encountered the rigorous and ripples that make a conversation in a car sound like this, while the study soon to be punished in Physical Review Letters finds that so-called washboard road are virtually inevitable, wheels rolling over dirt will almost always cause the rippling pattern that rattle your teeth as you drive.

The researchers made many(?) of road beds out of varies science of grain of sands(?) and even some long gain rice to learn about the physics involved.

They found that wheel rolling over loose particles just naturally causes washboarding. Doubling the bed thickness and having the gain size have almost not effect. Wheel size didn’t even matter. But the mass of the wheels did. Every(?) wheels produce larger ample(?) to grapples with shorter wave life making for a really rough ride.

Experiment shows that you could avoid generating the ripples by keeping traffic at less than 3 miles an hour. Therefore they concluded, washboard road would no doubt continue to annoy drivers for as long as there are unpaved road and wheels to roll over them.

[ 本帖最后由 nobodyliang 于 2007-8-13 16:23 编辑 ]

jessicagraceUID: 2154651

on nobodyliang
楼上第一次听写， 已经不错了。 我好多的都是参考你的呢。:loveliness:
8.13
If you ever drove on the dirt road, you may encounter the ridges and the ripples that make conversations in the car sound like this. When the study soon to be published in physical review letter finds that so-called wash board roads are virtually inevitable. Wheels rolling with dirt will almost always cause the rippling pattern that rattles your teeth as you drive. The research made miniature road beds out of various sizes of grains of sand, even some long grain rice to learn about the physics involved. They found that wheels rolling over loose particles just naturally causes wash boarding. Doubling the bed thickness and having the grain size had almost no effect. Wheel size did not even matter, but the mass of the wheels did. Have your wheels produced large amplitude of ripples with short wave lands(?), making for a really rough ride. Experiences show that you can avoid generating the ripples by keeping traffic less than three miles an hour. Therefore, they can conclude wash board roads will no doubt to continue to annoy drivers for as long as there are the unpaved roads and wheels to roll over them.

liucirongUID: 2215759

August 13, 2007: 60-Second Science Physics Says Washboard Dirt Roads Almost Inevitable

Researchers examining the behavior of beds of granular material find that vehicles moving at more than about three miles per hour will inevitably cause ripples in an unpaved road. Steve Mirsky reports.

If you’ve ever driven on a dirt road, you’ve encountered the ridges andripples that make a conversation in the car sound like this. Well,? a study soon to be published in Physical Review Letters finds that so-called Washboard Roads are virtually inevitable. Wheels rolling over dirt will almost always cause the rippling pattern that rattles your teeth as you drive. The researchers made many miniature [ˈminiətʃə]road beds out of various sizes of grains of sand and even some long grain rice to learn about the physics involved. They found that wheels rolling over loose particles just naturely(naturally) causes washboarding. Doubling the bed thickness and having(half in) the grain sizes had almost no effect. Wheel sizes didn’t even matter, but the massive(mass) of the wheels did. Have you (heavier) wheels produce larger amplitude ripples with shorter wave length making for a really rough ride. Experiments show that you can avoid generating ripples by keeping traffic at less than 3 miles an hour. Therefore, they conclude washboard roads will no doubt continue to annoy drive for as long as there are unpaved roads and wheels to roll over them.

NEW WORDS:
miniature [ˈminiətʃə] a.小型的，微小的 n.微小的模型；微型画
amplitude振幅; 波幅; 幅度广阔; 广大; 丰富
拼写:
naturely(naturally)
听错:
having(half in)
the massive(mass) of
Have you (heavier)
没听出:
Ridges
annoy
rattles
make a conversation
the bed thickness
a really rough ride.
will no doubt

tina_sakuraUID: 2182797

补充修改最后一句的小错：annoy drivers
另：听得很棒，赞~

dcbUID: 2232749

on jessicagrace

Aug 13

If you've ever driven on the dirt road, you’ll encounter the ridges and ripples that make a conversation in the car sound like this. While a study is soon to be published in Physical Review Letters finds that these so-called washboard roads are virtually inevitable. Wheels rolling over dirt will almost always cause the rippling pattern that rattles your teeth as you drive. The researchers made miniature road beds out of various sides as grains of sand and even some long grain rice to learn about the physics involved. They found that wheels rolling over loose particles just naturally causes washboarding. Doubling the bed thickness and having the grain size had almost no effect. Wheel size didn’t even matter., but the mass of the wheels did. Heavier wheels produce larger amplitude ripples with shorter wavelets, making for a really rough ride. Experiments showed that you can avoid generating the ripples by keeping traffic at less than three miles an hour. Therefore, they conclude washboard roads will no doubt continue to annoy drivers for as long as there are unpaved roads and wheels to roll over them.

[ 本帖最后由 dcb 于 2007-8-13 18:17 编辑 ]

zhenzhen_163UID: 196150

Doubling the bed thickness and halving the grain size had almost no effect.

Halve is a verb.   :)

xbx_leeUID: 129512

1. Well, a study assumed to be published in Physical Review Letters finds that so-called washboard roads are virtually inevitable.
I can't hear "these"...
2. The researchers made miniature road beds out of various sizes as grains of sand and...
What is sides mean of it is it?
3. Heavier wheels produce larger amplitude ripples with shorter wavelets, making for a really ruffle ride.
I don't think it's rough.

zhenzhen_163UID: 196150

Please refer to licirong's post. He got most of it right.  :)

nobodyliangUID: 2345429

On jessicagrace and liucirong :

Thanks but 你们都是学什么出身的啊.... 怎么能知道 miniature 和 amplitude 这类的词呢.....

billyliuUID: 2367326

楼主真强！向你学习

xbx_leeUID: 129512

Got it!