microscopic view of a blastula during pregnancy. after the cleavage has produced over 100 cells, the embryo is called a blastula. - 蛋黃 幅插畫檔、美工圖案、卡通及圖標
vector illustration of fried egg with runny yolk on white background black and white drawing for children to learn to color according to the picture. - 蛋黃 幅插畫檔、美工圖案、卡通及圖標早午餐, 黑白片
vector illustration of sunny-side up egg with alphabet letter s lower case for children learning practice abc - 蛋黃 幅插畫檔、美工圖案、卡通及圖標
vector illustration of fried egg with runny yolk on white background dot to dot line drawing for children to learn to draw lines along the dotted lines. - 蛋黃 幅插畫檔、美工圖案、卡通及圖標
