双方关系紧张，谈判结束遥遥无期。

___Relations between the parties are strained and an end to negotiations isn't in sight.

伍迪·艾伦的电影经常探讨人际关系。

Woody Allen's films often explore human ___relations.

与同事保持积极关系可以提升工作场所士气。

Maintaining positive ___relations with colleagues can improve workplace morale.