moderator

• 指调节、管理或仲裁的人或物，包括主持辩论或论坛的人、防止冲突的调解者、某些教会会议的主持人，以及核反应堆中用于减缓中子的材料。

A noun referring to a person or substance that moderates, including one who presides over debates or forums, mediates disputes to prevent conflict, an officer presiding in certain church assemblies, or a material used to slow neutrons in nuclear reactors.

1. Nuclear reactor componentC1formalscientific

   A substance, such as heavy water or graphite, used to slow down fast neutrons in a nuclear reactor to sustain a chain reaction.

   慢化剂

   • The reactor uses graphite as a moderator to control the fission process.
   • Heavy water is an effective moderator in certain types of nuclear reactors.
   • Engineers selected a specific moderator to optimize the reactor's performance.

2. Church officerC1formal

   In the Presbyterian church, the officer who presides over a synod or general assembly.

   教会长老会议主席

   • The moderator opened the general assembly with a prayer.
   • She was elected as the moderator of the synod for the upcoming year.
   • The moderator's role is to guide the discussions and maintain order.

   同义词chairchairpersonpresidentpresiding officer

3. Debate or forum leaderB2formal

   A person who presides over a forum, debate, or discussion, ensuring it runs smoothly and fairly.

   主持人

   • The moderator asked the panelists to keep their answers brief.
   • An experienced moderator kept the online forum civil and productive.
   • The debate moderator enforced the time limits for each speaker.

   同义词arbiterchairchairpersonfacilitatormediatorrefereeumpire

4. MediatorB2formal

   Someone who mediates disputes and attempts to prevent conflict or violence.

   调解人

   • A neutral moderator was brought in to resolve the labor dispute.
   • The community moderator helped calm tensions between the two groups.
   • She acted as a moderator during the heated negotiation.

   同义词arbiterarbitratorconciliatorintermediarymediatornegotiatorpeacemakerrefereeumpire