Level 6 · word 15,094 of 20,000

undulating

/ˈʌndʒəˌleɪtɪŋ/ American
  • v. 起伏, 波动
Definition
  • v. moving or shaped in a smooth, wave-like pattern
Example
The hills formed a gentle, undulating line across the horizon.
群山在地平线上形成了一条起伏平缓的线条。