Stoma
01
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)
02
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
例子
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。
