When melting snow-crystals or raindrops fall through very cold air, they freeze to form small particles of ice, called sleet.
VOA: special.2011.01.11
And it's dangerous. People slip and fall on the snow because it's made of ice.
这样也很危险,人们会在雪上滑倒,因为雪里面都是冰。
Bob Doughty and Faith Lapidus tell about some of the winning American athletes on and off the ice and snow.
VOA: special.2010.02.26
When melting snow crystals or raindrops fall through very cold air, they freeze to form small particles of ice,called sleet.
VOA: special.2010.01.05
The scientists work for the National Snow and Ice Data Center at the University of Colorado in Boulder.
VOA: special.2009.10.27
Signs of climate change include an increase in rain when there used to be only snow, new plant life,and melting ice sheets.
VOA: special.2009.06.03
The scientists work for the American space agency and the National Snow and Ice Data Center in Boulder,Colorado.
VOA: special.2009.05.05
The blue light is the product of a long travel path through the snow or ice.
VOA: special.2010.01.05
Pure white snow and ice covered the Earth for as far as he could see.
VOA: special.2010.05.01
Many people die in traffic accidents on roads that are covered with snow or ice.
VOA: special.2010.01.05
Walter Meier is a scientist with the National Snow and Ice Data Center.
VOA: special.2009.05.05
Rain,snow,ice,wind, and plant roots rubbed away at the top of the new canyon.
VOA: special.2009.10.07
Drivers must use special care because of ice and snow on the roads.
VOA: special.2009.01.07
They could see the snow-covered mountains and huge amounts of blue ice.
VOA: special.2009.12.23
It contains many groups of tiny ice particles called snow crystals.
VOA: special.2010.01.05
In simple terms, think of snow or ice as a filter.
VOA: special.2010.01.05
At a place where the snow seemed very solid,the ice broke.
VOA: special.2010.05.01
Sometimes,snow or ice may appear to be blue.
VOA: special.2010.01.05
Generally,the color of snow and ice appears white.
VOA: special.2010.01.05
He began to walk on the snow-covered ice.
VOA: special.2010.05.01
Columnar snow crystals look like sticks of ice.
VOA: special.2010.01.05
But the snow does melt. Ice cold water travels down the mountains and forms several rivers -- the Gila River,the Green River, the Little Colorado,the San Juan, the Virgin and the Gunnison Rivers.
VOA: special.2010.10.27
A week of snow and ice also temporarily shuttered Dublin airport and led to cancellations of planes, trains and sporting events in London and elsewhere.
VOA: standard.2010.01.10
"SnowCrystals.com is a website that is about snowflakes and snow crystals and generally ice phenomena,"
VOA: standard.2009.12.19
VOA: standard.2009.12.25
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