eluvial gravelseluvium gravelslag gravel残: incomplete; deficient积: amass; store up; accumulate砾石: gravel; grail; dirt冲积砾石: alluvial gravel; run gravel; rungravel滞积砾石: lag gravel下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:残积砾石,即可在微信中查询翻译