This is the 7072nd most frequent Korean word.
정서를
"정서를" is the accusative case of "정서," which means "emotion" or "sentiment" in English.
In this sentence, '정서를' is the object of the verb expressing, referring to 'emotions' or 'feelings.'
그림은 사람의 정서를 표현하는 도구입니다.
A painting is a tool for expressing people's emotions.
Here, '정서를' is used as the direct object showing what is sustained — 'emotions.'
음악은 안정된 정서를 유지하는 데 도움을 줍니다.
Music helps in maintaining stable emotions.
In this instance, '정서를' identifies what is conveyed — 'feelings' or 'emotions.'