alimentary cycle

例句：

1. 1. The animal's alimentary cycle is crucial for its survival.
   动物的营养周期对其生存至关重要。
2. 2. The plant's growth cycle includes several alimentary cycles.
   植物的生长周期包括几个营养周期。
3. 3. The research focused on understanding the alimentary cycle of the bacteria.
   研究专注于理解细菌的营养周期。