moving boundary

例句：

1. 1. The company has recently movedits headquarters to a new location.
   该公司最近将总部迁移到了一个新的地点。
2. 2. The movingboundary between the two countries is still unclear.
   两国之间的边界仍然不明确。
3. 3. The researchteam found that the moving boundary of thedisease had shifted.
   研究团队发现该疾病的移动边界已经发生了变化。