[ADJ 形容词]人际的;人与人之间的Interpersonal means relating to relationships between people.
[ADJ n]
...problems in interpersonal relationships...
人际关系问题
Training in interpersonal skills is essential.
人际交往技巧的培训非常必要。
Oxford
inter·per·son·al/ˌɪntəˈpɜːsənl; NAmEˌɪntərˈpɜːrsənl/adjective[only before noun ]connected with relationships between people 人际关系的;人际的◆interpersonal skills人际交往技巧inter·per·son·al/ˌɪntəˈpɜːsənl; NAmEˌɪntərˈpɜːrsənl/