Undulations
(undulation 的复数) n. 波动, 波状弯曲, 起伏\\n[医] 波动
🗣️ 情景例句
Thanks very much. I'll read these.
非常感谢。我会看一下的。
Not getting the job was a terrible disap-pointment.
得不到那份工作，叫人失望极了。
Can't you see? They're round, like the moon. Have one, please.
你没看见吗？它们像月亮一样，圆圆的。请吃一个吧。