音標(biāo)發(fā)音英式音標(biāo) [?ɡɑ?d ?sel]美式音標(biāo) [?ɡɑ?rd ?sel]英式發(fā)音 美式發(fā)音 基本解釋植物的保衛(wèi)細(xì)胞(保衛(wèi)細(xì)胞組成環(huán)狀,搆成了葉子的氣孔,能控制氣流的進(jìn)出,阻止水分流失。)。同根派生 guard cell相關(guān)詞英英字典劍橋英英字典 on a leaf, one of a pair of cells positioned around each stoma (= a small hole in the surface) that open it to release gases or close it to prevent water from being lostguard cell劍橋字典guard cell柯林斯字典