boundary cycle

例句：

1. 1. The boundarycycle between two cultures is complex and requires careful analysis.
   两种文化之间的边界周期是复杂的，需要仔细分析。
2. 2. During the boundary cycle, the company's revenue increased significantly.
   在边界周期期间，公司的营收显著增加。
3. 3.The boundary cycle of the ecosystem plays a crucial role in maintaining its balance.
   生态系统的边界周期在其维持平衡中起着关键作用。