That motivated insurance salesmen to form long-term relationships with the families that he was insuring and to keep them from canceling their policies.

这种机制促使保险推销员与客户,建立起长期合作关系,以防止客户取消保单

耶鲁公开课 - 金融市场课程节选

It's often the final stage of long-term relationships that have gone bad.

经常而言，这处于一段濒临破裂感情的最后阶段。

耶鲁公开课 - 心理学导论课程节选