permanent dipole moment

例句：

1. 1.The company's reputation is permanent, so it's important to maintain good customer service.
   公司的声誉是永久的，因此保持良好的客户服务非常重要。
2. 2. The sun will rise and set, but its influence on the earth is permanent.
   太阳会升起和落下，但它对地球的影响是永久的。
3. 3. The decision to relocate was permanent, and we couldn't change our minds.
   搬家的决定是永久性的，我们无法改变主意。