This is the 4351st most frequent Korean word.
투자한
"Invested."
The word '투자한' in this sentence is the past tense form of the verb '투자하다' (to invest) and emphasizes the completed action of investing in the business.
그는 새로운 사업에 많은 돈을 투자한 후 성공을 거두었습니다.
After investing a lot of money in a new business, he achieved success.
Here, '투자한' refers to allocating time towards educational activities, demonstrating its applicability not only towards monetary investment but also effort and resources.
나는 미래를 대비하기 위해 다양한 교육에 시간을 투자한 적이 있습니다.
I have spent time investing in various education programs to prepare for the future.
In this sentence, '투자한' indicates the action of placing financial investment into stocks, using the verb to connect the past action with current results.