This is the 9723rd most frequent Korean word.
고무벨트에
"고무벨트에" means "on the rubber belt" in English.
In this sentence, the word '고무벨트에' indicates the location where the dust is located, specifically on the rubber belt.
고무벨트에 먼지가 가득해요.
The rubber belt is full of dust.
Here, '고무벨트에' is used as the subject of discussion, suggesting that the problem arises in connection with or pertains to the rubber belt.
나는 고무벨트에 문제가 생겼다고 느껴요.
I feel there is a problem with the rubber belt.
The usage of '고무벨트에' in this sentence illustrates the target or object of the action, which is touching the rubber belt to perform a repair.