Level 5 · word 5,833 of 20,000

rolling

/ˈroʊlɪŋ/ American
Picture: rolling
  • 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。