音標發(fā)音英式音標 [?ɡɑ?d ?sel]美式音標 [?ɡɑ?rd ?sel]英式發(fā)音 美式發(fā)音 基本解釋植物的保衛(wèi)細胞（保衛(wèi)細胞組成環(huán)狀，搆成了葉子的氣孔，能控制氣流的進出，阻止水分流失。）。同根派生 guard cell相關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