av·a·lanche /ˈævəˌlænʧ/
  雪崩,山崩,湧到之物(vi.)崩落,湧至(vt.)大量投入
  avalanche
  突崩
  Av·a·lanche n.
  1. A large mass or body of snow and ice sliding swiftly down a mountain side, or falling down a precipice.
  2. A fall of earth, rocks, etc., similar to that of an avalanche of snow or ice.
  3. A sudden, great, or irresistible descent or influx of anything.
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  avalanche
       n 1: a slide of large masses of snow and ice and mud down a
            mountain
       2: a sudden appearance of an overwhelming number of things;
          "the program brought an avalanche of mail"
       v : of snow masses in the mountains [syn: roll down]