color vector illustration of children's activity coloring book pages with pictures of internal organ skin. - 根 幅插畫檔、美工圖案、卡通及圖標健保和醫療
two beetroots with green tops and extensive roots against a two-tone background, illustrating a cross-section of soil - 根 幅插畫檔、美工圖案、卡通及圖標農業, 地底下
cross section illustration of potato plant growing above soil with roots, insects, mole and ancient bottle in soil strata underground - 根 幅插畫檔、美工圖案、卡通及圖標植物學, 動物巢穴, 鼹鼠
