끌어올렸고

In a sentence

• 그는 자신감을 끌어올렸고 이제 뭐든 할 수 있을 것 같다.

  He boosted his confidence and now seems capable of anything.

  The word 끌어올렸고 is used metaphorically to express raising or increasing an abstract quality—confidence.

• 우리는 기계의 성능을 끌어올렸고 더 효과적인 결과를 얻었다.

  We improved the machine's performance and achieved more effective results.

  Here, 끌어올렸고 describes the enhancement of a tangible, practical aspect—performance of a device.

• 그녀는 팀의 사기를 끌어올렸고 분위기가 활기차졌다.

  She boosted the team's morale, and the atmosphere became lively.

  In this sentence, 끌어올렸고 signifies elevating an emotional or mental state—morale.