关于gully的百科

• gully造句怎么写

• Thirdly,accordingtotheresearchneeds,selectedgullylength,gullywidth,gullydensityandverticalslopeastheevaluationindex.Theyclamberedupanarrowgully.Thehorsegallopedforward,andthegullyandgullywascoveredbywhitesnow.SoilerosioninhillygullyregionoftheLoessPl...
• 2017-08-2126237