| 单词 | particles collide | 
| 释义 | particles collide When the particles collide with the gases in the ionosphere they glow, producing a spectacular array of colours - primarily red, green, blue and violet. Times, Sunday Times The particles collide with each other in these whirlwinds. Retrieved from Wikipedia CC BY-SA 3.0  The walls represent the magnetic mirrors with whom the cosmic particles collide. Retrieved from Wikipedia CC BY-SA 3.0  When two such particles collide, they annihilate each other, so that at each step the number of particles remains unchanged or decreases. Retrieved from Wikipedia CC BY-SA 3.0  With slightly stronger winds, particles collide in mid-air, causing sheet flows. Retrieved from Wikipedia CC BY-SA 3.0  | 
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