transition-line analogy

例句：

1. 1. The company's new policy is a transitional line to its old system.
   公司的新政策是向旧系统过渡的一条线。
2. 2.This is a transitional analogy that helps us understand the concept of change.
   这是一个过渡性比喻，有助于我们理解变化的概念。
3. 3.The transitional line between two cultures is often marked by cultural exchanges and integration.
   两种文化之间的过渡线通常由文化交流和融合来标记。