“subsurface current”写句子,用subsurface current造句
2021-08-13
Foratime,surfaceandsubsurfacecurrentareinoppositedirections;flowisseawardatthesurfaceandlandwardnearthebottom.Astheydriftawayfromthepolarregion,icebergssometimesmovemysteriouslyinadirectionoppositetot...