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
When would you be fond of receiving the call?
你喜欢什么时候叫您?
That house is for sale. It has central heating.
此房出售,房子里有供暖设备。
It is quite possible that the thief might put some meat in you bag.