Level 5 · word 9,748 of 20,000

keynote

/ˈkiːˌnoʊt/ American
  • n. 主旨, 基调
  • v. 定基调
Definition
  • n. the main idea or theme of something, or the basic note of a musical scale
  • v. to state the main idea or set the tone of an event
Example
The famous scientist gave the keynote speech at the conference.
这位著名科学家在会议上发表了主旨演讲。