interlocutor|interlocutors

在会议中，他是一个很好的对话者，总是能提出有价值的问题。

He was an excellent ___interlocutor during the meeting, always asking insightful questions.

会议中的两位发言人进行了深入的交流。

The two ___interlocutors at the meeting had an in-depth conversation.

公司任命她作为与政府谈判的首席代表。

The company appointed her as the lead ___interlocutor in the negotiations with the government.