sphacelial

例句：

1. 1. The sphacelial growth of the fungus was observed under the microscope.
   在显微镜下观察到了真菌的丝状生长。
2. 2. The sphacelial structure of the fungus is essential for its survival.
   真菌的丝状结构对其生存至关重要。
3. 3. Sphacelial infections are often difficult to treat due to their slow-growing nature.
   由于生长缓慢，丝状菌感染往往难以治疗。