Ondulation
. 波浪式振荡, 波动
🗣️ 情景例句
It'll only take a few minutes.
只要几分钟时间。
Did you work all day?
你整天工作吗？
I think that maybe his Chinese teacher will give Jim some work to do during the holiday.
我想吉姆的汉语老师也许会给他布置一些假期作业。