The size of individual basins will generally depend on the slope of the land surface, except in relatively flat plains such as valley floors.

 
  • 除了相對平坦的平原(如谷底),每個(gè)池塘的大小一般取決于地面坡度。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan