They are named, probably as the most common expression is used "Crop Circles", and we are able to explain them without your help (we, humans, earthlings, mankind), without any your further increased laborious efforts.
Wao ni jina lake, na pengine kujieleza zaidi ya kawaida hutumiwa "mazao duru", na sisi ni uweza kueleza Them bila msaada wako (sisi, binadamu, Earthlings, wanadamu), bila yoyote zaidi Kuongezeka juhudi yako ya utumishi.