n. any substance used to slow down neutrons in nuclear reactors
n. in the Presbyterian church, the officer who presides over a synod or general assembly
n. someone who presides over a forum or debate
n. 主席, 会议主持人, 仲裁人
[计] 筛选人
1. The moderator helped to keep the discussion on track.
主持人帮助讨论保持在正轨上。
2. During the debate, the moderator asked questions to both candidates.
在辩论中，主持人向两位候选人提问。
3. A good moderator knows how to manage time effectively.
一个优秀的主持人知道如何有效管理时间。