Stoma (pl. stomata) One of a large number of pores in the epidermis of plants through which gaseous exchange occurs.
Stoma (pl. stomata) One of a large number of pores in the epidermis of plants through which gaseous exchange occurs.
气孔：植物叶片表皮存在的数目众多的小孔，打开时允许气体自由出入进行交换。