Unduloid
波状体
🗣️ 情景例句
Can I buy travelers checks here?
这儿能买旅行支票吗？
Poverty on an old man's back is a heavy burden.
老而贫穷，负担沈重。
Here are the results. Girls' relay: The winners -- Class 4! (Hooray!)
获胜者--4班！（好！）