idiom
C2
A lifestyle that is busy, exciting, and often stressful, typically associated with success and ambition.
After years of living in the fast lane, she decided to slow down and enjoy the simpler things in life.
빠른 차선에서 수년을 살아온 후, 그녀는 속도를 늦추고 더 단순한 삶의 즐거움을 누리기로 결심했습니다.
translation
빠른 차선