来自希腊语 stoma,嘴，口，孔，说话，声音，来自 PIE*stomen,嘴，口，词源同 stomach.引 申词义气孔，呼吸孔等。

1. Observe stoma site for bleeding, crust, irritation, and broken skin.

观察出口有无出血, 结痂, 发炎及破皮.

2. Oxygen and carbon dioxide from the air enter through the stoma.

氧和二氧化碳从空气中进入气孔.

3. Skin care to prevent excoriation around the stoma consists of keeping the skin clean and dry.

皮肤护理对要预防造口周围擦伤,要经常保持皮肤的清洁及干燥.

4. The stoma and guard cells are collectively called the stomatal apparatus.

临近保卫细胞处常存在变形了的表皮细胞,被称为副卫细胞.

5. The stoma characters of both tetraploid and diploid Anthuriums were comparatively investigated.

对红掌四倍体和二倍体材料的气孔特征进行了研究.