N-COUNT
（政策、講話或想法的）要旨，主題，基調
The keynote of a policy, speech, or idea is the main theme of it or the part of it that is emphasized the most.
例句
He would be setting out his plans for the party in a keynote speech...
他將在其主旨發言中闡述他對該黨的計劃。
Responsibility and moderation were to be the keynotes of their foreign policy.
責任和克制將是他們外交政策的核心。