reciprocation

例句：

1. 1. The company's policy of reciprocation has been praised by many customers.
   该公司的互惠政策受到了许多顾客的赞扬。
2. 2. The teacher's encouragement was a great help to the student's reciprocation.
   老师的鼓励对学生的相互帮助起到了很大的作用。
3. 3.In the business world, reciprocation is often seen as a way to build long-term relationships.
   在商业领域，互惠通常被视为建立长期关系的一种方式。