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 One of anumber of specialized epidermal cells of aplant that are found adjacent to the guardcells,and may help in opening and closing the stomata.位于植物內(nèi)保衛(wèi)細胞近旁的特異化的表皮細胞,可協(xié)助打開或關(guān)閉氣孔。......(本文共 155 字) [閱讀本文] >>