演讲者

• lecturer
• orator
• tub thumper

例句

1. 演讲者遭到连珠炮般的质问。
   The lecturer was bombarded with questions.
2. 演讲者通过麦克风说话。
   The lecturer speaks through a microphone.
3. 那个演讲者正在做讲演。
   The lecturer is giving a speech.
4. 演讲者使我们对新加坡的经济发展状况有所了解。
   The lecturer made us acquainted with the development of economy in Singapore.