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
And a cheeseburger, medium rare,
一份起士汉堡,五分熟
Junk
零碎废物
After the accident, all the lines and taps were clearly marked and new people joining the workforce were given a talk on safety before they started work.