n. the principal theme in a speech or literary work
n. a fundamental or central idea
v. set the keynote of
v. give the keynote address to (an audience)
n. 主调音, 基音, 基调
vt. 说明基本政策, 定基调
1. The keynote speaker will discuss the importance of innovation in technology.
主旨发言人将讨论技术创新的重要性。
2. I attended a conference where the keynote was delivered by a famous author.
我参加了一个会议，主旨演讲由一位著名作家进行。
3. The keynote presentation set the tone for the rest of the event.
主旨演讲为整个活动定下了基调。