Undee
a. 波形的,波浪形的
🗣️ 情景例句
They can keep a record of all of the important dates
他们可以记录下重要的日子。
He's studying his lesson.
他正在学习课程。
A run-down watch is still a watch and can be rewound.
手表停了依然是只手表，还可以重上好发条。