Level 5 · word 5,833 of 20,000
rolling
/ˈroʊlɪŋ/
American

- adj. 旋转的, 起伏的
- n. 旋转, 轰响
- Definition
- adj. turning over and over, or gently rising and falling
- n. the act of turning over, or a rumbling sound
- Example
- The ball kept rolling down the steep hill.
- 球顺着陡坡不停地滚下去。