（某人或某事的）核心
the person or thing that is most important in forming the character of a place, organization, etc. and giving it energy
Keane was the heartbeat of the team. 基恩是球队的核心。
This ancient market is the heartbeat of our city.
People like teachers and firefighters are the heartbeat of their community.
The rhythm section is the heartbeat of the whole band.
He considers the car industry to be the heartbeat of America.
See also: heartbeat