1. A sandy tract or dune by the seashore. 
   沙丘海边的沙地或沙丘
2. a dune grass of the Pacific seacoast used as a sand binder. 
   用作固沙植物的太平洋海岸的沙丘草。
3. off-road vehicles such as dune buggies; off-road sports such as snowmobiling. 
   像沙滩车之类的越野车；像雪上汽车之类的越野运动。
4. fluidized bed combustion boiler 
   沸腾燃烧锅炉
5. Lie on a bed 
   躺在床上

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• 1. 河底沙丘
  attached dune 　附着[连岸]沙丘...bed dune 　河底沙丘...blizzard snow dune 　暴风雪堆
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