英语语法分析

When a rod is about to sporulate a tiny refractile granule appears in the cell.

当一个杆菌即将形成芽孢时，细胞内便出现一粒带折射性的微小颗粒。

Elastic fibers usually occur as individual, refractile, branching, and anastomosing fibers.

弹性纤维通常是单独的，折光的，分枝的及吻合的纤维。