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
I'm disappointed, but I respect your decision.
我很失望, 但我尊重你的决定。
How are you going?Are you going by boat?
你怎样去?坐船去吗?
For twenty years Gandhi played an important role in working for equal rights for Indians.