이르기까지

In a sentence

• 그는 어렸을 때부터 노력해 온 덕분에 오늘날의 성공에 이르기까지 모든 것을 이뤘습니다.

  Because he has been striving since his childhood, he has achieved everything up to his current success.

  The word '이르기까지' here is used to indicate reaching or achieving a certain point after a progressive effort.

• 그 프로젝트에는 기획 단계에서 이르기까지 신중함이 요구되었습니다.

  The project required careful consideration from the planning stage up to its execution.

  In this sentence, '이르기까지' is applied to signify a span or extent of process, denoting progression over steps.

• 고생 끝에 대학 졸업에 이르기까지 모든 과정이 그에게 자랑스러운 기록이 되었습니다.

  Every process, from the struggles to attaining university graduation, became a proud achievement for him.

  Here, '이르기까지' is used to convey concluding a challenging journey or event into a noteworthy accomplishment.