nasa斯必泽太空望远镜的资料，资料显示这颗明亮的恒星周围环绕着一个尘埃带，其中的物质包含水冰、有机物和岩石，跟碰撞后粉碎的彗星物质极为相似。
NASA's Spitzer Space Telescope showing a band of dust around the bright star that strongly matches the contents-such as water ice, organics, and rock-of a comet busted apart in a collision.
在北半球最近碰撞形成的五个陨石坑掀起的岩屑中，发现了埋藏的冰。
The buried ice was spotted in debris thrown up in five recent northern hemisphere impact craters.
一开始你可能不会这样认为，因为太阳系里和彗星发生过碰撞的行星都比火星还远，在那样的轨道上水永远是以冰的形式存在。
On first blush, you might think not: the planet where the comet or comets came to grief is farther out than Mars, in an orbit where water would be permanently frozen.
该方法的优点是能将冰对结构的碰撞及冰的破碎过程可视化，同时发生碰撞后结构在每一时间步的响应都可计算出来。
Meanwhile, the dynamic response of the structure at each time step after the ice bumping against the structure can be calculated.
冰情较严重时，中小型船舶在海冰的作用下容易走锚，造成碰撞、搁浅等严重事故。
Under severe ice conditions, small and medium sized vessels are easy to drag, being caused collisions, groundings and other serious accidents.
冰情较严重时，中小型船舶在海冰的作用下容易走锚，造成碰撞、搁浅等严重事故。
Under severe ice conditions, small and medium sized vessels are easy to drag, being caused collisions, groundings and other serious accidents.
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