Sunlight, Upper Epidermis, Waxy Cuticle, Air space, Pallisade Mesophyll, Xylem, Phloem, Spongy Mesophyll, Guard Cell, Lower Epidermis, Gas Exchange through Stomata, Chloroplasts in a Guard Cell.

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?