food chain cycle

例句：

1. 1. The food chain cycle is essential for maintaining ecological balance.
   食物链循环对于维持生态平衡至关重要。
2. 2. In the food chain cycle, predators eat their prey and are then eaten by their predators.
   在食物链循环中，捕食者吃它们的猎物，然后被它们的捕食者吃掉。
3. 3. The food chain cycle helps to maintain a healthy ecosystem by ensuring that all species have a place to live and reproduce.
   食物链循环有助于维护一个健康的生态系统，通过确保所有物种都有生活和繁殖的地方。