changes to the returned image will be reflected in this image. */ public Image crop(int x1, int y1, int x2, int y2) { return new Image(x2 - x1, y2 - y1, pixels
[2013-10-07]. (原始内容存档于2013-12-14). Lomas, Mark. Dublin: Rooney the cream of the crop. ESPN. ESPN Internet Ventures. 2010-05-24 [2013-10-07]. (原始内容存档于2014-01-17)
David. Phosphorus and nitrogen losses in relation to forest, pasture and row-crop land use and precipitation distribution in the midwest usa. Revue des sciences