1、The trialogue between the three leaders lasted for several hours, discussing various issues of international importance.

这三位领导人之间的对话持续了几个小时，讨论了各种国际重要问题。

2、The trialogue format allows for a more comprehensive and diverse discussion compared to a dialogue between just two people.

与只有两人之间的对话相比，trialogue形式可以进行更全面和多样化的讨论。