public speakers 公众演讲者
audio speakers 音响设备
native speakers 母语使用者
A: Who are the keynote speakers for the seminar?
A：研讨会的主旨演讲者是谁？
B: They are experts from different universities.
B：他们是来自不同大学的专家。
1) 演讲者
2) 扬声器；音箱
3) 语言使用者
1. 演讲者；说话者
2. 扬声器；音箱
noun
1. people who deliver a speech or talk to an audience
2. devices that convert electrical signals into sound
3. people who speak a particular language