moderator
英 ['mɒdəreɪtə]
美['mɑdəretɚ]
	    - n. [核] 慢化剂;仲裁人;调解人;缓和剂
 
英英释意
- 1. any substance used to slow down neutrons in nuclear reactors
 
- 2. in the Presdyterian church, the officer who presides over a synod or general assembly
 
- 3. someone who presides over a forum or debate
 
- 4. someone who mediates disputes and attempts to avoid violence