capsule walls的用法和样例：
例句
- This causes the stomium to rupture, exposing the spores within the capsule.
孢子囊中的孢子在囊壁破裂时会散出。 - Results Irregular thickening of the cystic walls,septums and solid mural nodules in some cases were specific findings for the ultrasonic diagnosis of cystic renal carcinomas.
结果囊性肾癌的超声特点为囊壁及分隔不规则增厚，部分患者囊壁上可见实性结节。
