流域
英文解释:
  1. n.  basin
  2. n.  catchment
  3. adj.  valley
  4. n.  Watershed
  5. n.  catchment basin
  6. n.  river basin
  7. n.  area of land drained by a river
  8. n.  region drained by a river
  9.   hydrographic water basin
  10.   drainage basin
  11.   drainage area
法文解释:
  1. n.  bassin ( d'une rivière )