undulation
n
(a) [U] wave-like movement or appearance 波动; 起伏.
(b) [C] one of a number of wave-like curves or slopes 波状的弯曲或斜坡
The downs fell in gentle undulations to the sea. 这块丘陵地略带倾斜伸向大海.
🗣️ 情景例句
It's been my experience that I agree that yours are of better quality.
根据我的经验来看,你们的产品质量的确较好。
Let me guess.
让我猜一猜。
So how are you, Wang Bing. Are you excited about your new job?