1. 气孔：两个保卫细胞之间的裂生胞间隙称为气孔(stoma),它们是叶片与外界环境之间气体交换的孔道. 有些植物如甘薯等,在保卫细胞之外,还有较整齐的副卫细胞(subsidiarycell). 气孔在表皮上的数目、位置和分布,随植物种类而异,

2. 小孔：stokes wave 斯托克斯波 | stoma 小孔 | stone stream 岩石流

3. 嘴：spinos刺 | stoma嘴 | dorsali背

4. 细孔：stolon 匍匐枝 | stoma 细孔 | stomachache 肚子痛

1. a mouth or mouthlike opening (especially one created by surgery on the surface of the body to create an opening to an internal organ)

2. a minute epidermal pore in a leaf or stem through which gases and water vapor can pass

    Synonym: stomatepore