请教这两个句子中for和of有何区别
1、Eleven o'clock,approve the sketches for the toy spaceship.
2、Sam hands her a sketch of the toy spaceship.
这两句中的the sketches for the toy spaceship和a sketch of the toy spaceship意思都是“玩具太空船草图”,用“for”和用“of”有什么区别吗?