Undulance
n. 波状, 起伏
🗣️ 情景例句
By the way, what are you going to do on Christmas?
顺便问一下，圣诞节你打算做什么？
Don't forget to look after him.
不要忘记照料他。
Yes.I recognize him now.
是他。我现在认出他来了。