moving in a direction that rises and then falls
The kids were jumping up and down with excitement.
아이들은 흥분하여 위아래로 뛰어오르고 있었습니다.
moving from one end to the other and back
He was pacing up and down the hallway, waiting for the news.
그는 소식을 기다리며 복도를 오르락내리락 걸어다녔습니다.