This is the 12786th most frequent Korean word.
덤프트럭의
"Of a dump truck."
In this sentence, '덤프트럭의' indicates possession and describes the dump truck's attribute of its size.
덤프트럭의 크기가 매우 큽니다.
The size of the dump truck is very large.
Here, '덤프트럭의' is used to show necessity or the role of the dump truck in providing help.
덤프트럭의 도움이 필요할 때가 있습니다.
There are times when the help of a dump truck is needed.
In this case, '덤프트럭의' is used to associate with the driver, specifying ownership.