sto
ma
复数形式
stomas
1
造口, 口状开口
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
气孔, 叶孔
a microscopic pore found on the surface of leaves and stems of plants, involved in gas exchange, including the uptake of carbon dioxide and release of oxygen and water vapor
- Each stoma on the leaf's surface opens and closes to regulate the plant's water balance.
叶子表面的每个气孔都会开合以调节植物的水分平衡。
- The number of stomata per square inch on a leaf is influenced by environmental conditions.
每平方英寸叶片上的气孔数量受环境条件影响。
- Botanists study the structure of the stoma to understand how plants adapt to different climates.
植物学家研究气孔的结构，以了解植物如何适应不同的气候。
- The guard cells surrounding the stoma control its opening and closing in response to light and humidity.
围绕气孔的保卫细胞根据光照和湿度控制其开闭。
- The stoma provides a pathway for gases to move in and out of the plant's tissues during photosynthesis.
气孔为气体在光合作用过程中进出植物组织提供了通道。