This is the 18852nd most frequent Korean word.
심경에
"심경에" means "in one's mind" or "in one's emotional state."
심경에 is used to indicate 'on someone's state of mind or feelings' in this sentence.
그의 말은 그녀의 심경에 큰 영향을 미쳤다.
His words had a great impact on her state of mind.
심경에 is used here in the context of being influenced or affected (bringing change) to someone's emotions or mindset.
새로운 환경은 그의 심경에 변화를 가져왔다.
The new environment brought change to his emotions.
심경에 is employed here to denote 'in one's emotional landscape' where an enduring impression or effect is felt.